Created tool to reconstruct Z64 files. It basically reads all D64 files, splits them in 4 parts and tries to link them to decompressed Z64 parts (found by content instead of filename).
Why doing this? Many collectors have removed duplicate files from Z64 sets, but it actually inherent to the way they're organised. Take for instance a D64 file which is half empty. The empty track/sectors will be compressed the same way for each D64 image and thus result in the 'duplicate' entry.
Having encountered lots (really lots) of incomplete Z64 sets it was a rewarding challenge to reconstruct them.