diff --git a/SabreTools.FileTypes/Archives/SevenZipArchive.cs b/SabreTools.FileTypes/Archives/SevenZipArchive.cs
index f65be0b5..12ee27f2 100644
--- a/SabreTools.FileTypes/Archives/SevenZipArchive.cs
+++ b/SabreTools.FileTypes/Archives/SevenZipArchive.cs
@@ -15,8 +15,6 @@ namespace SabreTools.FileTypes.Archives
     /// </summary>
     public class SevenZipArchive : BaseArchive
     {
-        #region Constants
-
         /* Torrent7z Header Format
             http://cpansearch.perl.org/src/BJOERN/Compress-Deflate7-1.0/7zip/DOC/7zFormat.txt
 
@@ -24,44 +22,6 @@ namespace SabreTools.FileTypes.Archives
             06-07		ArchiveVersion (0x00, 0x03)
             The rest is unknown
         */
-        private readonly static byte[] Torrent7ZipHeader = [0x37, 0x7a, 0xbc, 0xaf, 0x27, 0x1c, 0x00, 0x03];
-        private readonly static byte[] Torrent7ZipSignature = [0xa9,
-            0xa9,
-            0x9f,
-            0xd1,
-            0x57,
-            0x08,
-            0xa9,
-            0xd7,
-            0xea,
-            0x29,
-            0x64,
-            0xb2,
-            0x36,
-            0x1b,
-            0x83,
-            0x52,
-            0x33,
-            0x00,
-            0x74,
-            0x6f,
-            0x72,
-            0x72,
-            0x65,
-            0x6e,
-            0x74,
-            0x37,
-            0x7a,
-            0x5f,
-            0x30,
-            0x2e,
-            0x39,
-            0x62,
-            0x65,
-            0x74,
-            0x61];
-
-        #endregion
 
         #region Constructors
 
diff --git a/SabreTools.FileTypes/Archives/TapeArchive.cs b/SabreTools.FileTypes/Archives/TapeArchive.cs
index 942fc952..5849c15e 100644
--- a/SabreTools.FileTypes/Archives/TapeArchive.cs
+++ b/SabreTools.FileTypes/Archives/TapeArchive.cs
@@ -1,12 +1,12 @@
 using System;
 using System.Collections.Generic;
 using System.IO;
+#if NET462_OR_GREATER || NETCOREAPP
 using System.Linq;
 using Compress;
 using SabreTools.Core.Tools;
 using SabreTools.Hashing;
 using SabreTools.Matching;
-#if NET462_OR_GREATER || NETCOREAPP
 using SharpCompress.Archives;
 using SharpCompress.Archives.Tar;
 using SharpCompress.Common;
diff --git a/SabreTools.FileTypes/Archives/XZArchive.cs b/SabreTools.FileTypes/Archives/XZArchive.cs
index 814572f5..5c867474 100644
--- a/SabreTools.FileTypes/Archives/XZArchive.cs
+++ b/SabreTools.FileTypes/Archives/XZArchive.cs
@@ -4,8 +4,8 @@ using System.IO;
 using System.Text.RegularExpressions;
 using SabreTools.Core.Tools;
 using SabreTools.Hashing;
-using SabreTools.IO.Extensions;
 #if NET462_OR_GREATER || NETCOREAPP
+using SabreTools.IO.Extensions;
 using SharpCompress.Compressors.Xz;
 #endif
 
@@ -16,8 +16,6 @@ namespace SabreTools.FileTypes.Archives
     /// </summary>
     public class XZArchive : BaseArchive
     {
-        #region Constants
-
         /* (Torrent)XZ Header Format
             https://tukaani.org/xz/xz-file-format.txt
 
@@ -25,9 +23,6 @@ namespace SabreTools.FileTypes.Archives
             06			Flags (0x01 - CRC32, 0x04 - CRC64, 0x0A - SHA-256)
             07-0A		Flags CRC32 (uint, little-endian)
         */
-        private readonly static byte[] TorrentXZHeader = new byte[] { 0xfd, 0x37, 0x7a, 0x58, 0x5a, 0x00, 0x01, 0x69, 0x22, 0xde, 0x36 };
-
-        #endregion
 
         #region Fields
 
diff --git a/SabreTools.FileTypes/Archives/ZipArchive.cs b/SabreTools.FileTypes/Archives/ZipArchive.cs
index 4c0132ff..91c3d0b0 100644
--- a/SabreTools.FileTypes/Archives/ZipArchive.cs
+++ b/SabreTools.FileTypes/Archives/ZipArchive.cs
@@ -18,16 +18,6 @@ namespace SabreTools.FileTypes.Archives
     /// </summary>
     public class ZipArchive : BaseArchive
     {
-        #region Constants
-
-        private const uint LocalFileHeaderSignature = 0x04034b50;
-        private const uint EndOfLocalFileHeaderSignature = 0x08074b50;
-        private const uint CentralDirectoryHeaderSignature = 0x02014b50;
-        private const uint EndOfCentralDirSignature = 0x06054b50;
-        private const uint Zip64EndOfCentralDirSignature = 0x06064b50;
-        private const uint Zip64EndOfCentralDirectoryLocator = 0x07064b50;
-        private const uint TorrentZipFileDateTime = 0x2198BC00;
-
         /* TorrentZip Header Format
             https://pkware.cachefly.net/webdocs/APPNOTE/APPNOTE_6.2.0.txt
             http://www.romvault.com/trrntzip_explained.doc
@@ -39,9 +29,6 @@ namespace SabreTools.FileTypes.Archives
             0A-0B		Last mod file time (0x00, 0xBC)
             0C-0D		Last mod file date (0x98, 0x21)
         */
-        private readonly static byte[] TorrentZipHeader = new byte[] { 0x50, 0x4b, 0x03, 0x04, 0x14, 0x00, 0x02, 0x00, 0x08, 0x00, 0x00, 0xbc, 0x98, 0x21 };
-
-        #endregion
 
         #region Constructors