Kaypro 10 turbo rom problems

Hello all, A first note: this machine works perfectly with the original rom (81-302) and hard drive (Seagate ST212). Now to the crazy stuff: I recently got the image and docs for the Kaypro turbo rom ver. 3.4. I've burned the eprom with 2 different burners and the roms match the 8k code when verified. I used a 27c64 and a 2764a. When I install the trom, the machine doesn't access the floppy drive. I get the startup screen for the turbo rom and a flat line cursor about 1/3 the way down the screen on the left side and then the machine hangs, no keyboard etc. This happens with the original hard drive installed or any of 4 other drives that I've tried (Seagate ST225 - brand new, ST277R, ST251, and Mitsubishi MR535. If I put the original rom back in, it boots from the floppy and I can format any of the hard drives mentioned. At one point (original rom in), I formatted the ST225 with the Advent advfmt.com program and it crashed while partitioning and when I put the trom back in, I got a boot error (good news because it saw the hard drive) and the floppy drive lit up. I rebooted with a floppy and was able format the hard drive successfully and copy programs to the 3 partitions - 8, 8, & 4 megs. I was filling up the second partition when I got a few bad sector errors so I decided to use one of the bigger drives that I have. This wasn't a good move because now the trom won't access the floppy again. Does any of this make sense? Thanks for listening. Ralph