First thing I noticed when I bought Batrider a few months back was that there were some odd triangles across the screen...

I initially thought that it might be a voltage issue, but when I checked and found the voltage to be a little high (5.2) I lowered it to no effect.
I was obviously concerned as I had spent a small fortune, so I tested it on the U4 (with a JAMMA to MVS adapter, of course) and there was no issue. No triangles.
Tried it back in the Windy, thinking that it may have been poorly plugged in to the JAMMA harness, but no. Same issue.
I also noticed that the change region trick (hold all three buttons when powering on) doesn't work on the Windy II either?!
Tried again on the U4, trick works no issues.
Any ideas why the Windy doesn't like Batrider (or vice versa)?? The JVS to JAMMA adapter maybe??