Just so you know, the RAMGS/8 is NOT compatible with the zip gsx accelerator.
Dunno why it's not compatible, the RAMGS/8 works fine in the other two un accelerated rom 01 I have here,
and works perfectly well in my rom03 if I remove the zip gsx card. I'm betting the zip gsx simply won't work with 8 meg cards.

Thanks for the feedback. Unfortunately I don't own a zipgsx so I could not test that configuration.
Can you try in 4MB mode? This will help narrow down 4MB vs. a timing issue.

Compatibility with accelerator is a hit or miss.
We had reports of working perfectly on some machines and not working at all on other ones.
Unfortunately we don't own a zipGSX nor a TransWarp so it's really hard to debug.