PRG works for me on the kung fu flash, make sure your kung fu flash is running on the latest firmware ones below 19 have bugs (easy to update)
You did an amazing job on the game, it deserved a nice case and I have a thing for real tapes! Loved the loader :)
@Brokenbytes bought it and loved it really nice, I made a real tape and knocked up a tape case inlay and label anyone who's a member of the FB Commodore 64/128 group can download