Quoted from ralphwiggum:Do you ever run Visual Pinball? It would be perfect for checking something like this. If my R911 wasn't in storage right now, I would have responded with results for you.
PinMAME only has the v1 ROMs available. But it would be interesting for OP to dump his ROM and then try playing it in PinMAME to see if his problem is the ROM.
viperrwk