I am running/burned the new 105 that you uploaded on the 13th
Still not sure how to confirm what rom revision I am running. I went ahead and did a dump of my 105 and placed it below.
http://classicarcadeparts.com/pp/
If you tell me how to figure out which roms the board set is running I will.
I went ahead and made some snaps of my test mode (see link above). My accel / gas pedal starts at 00 then if you give it some gas it runs through a bunch of different numbers and letters. It does take quite a long time to settle back down to 00. I can imagine that's were the issue still lays for starting a new game. Meaning that once one game is over the gas pedal is still on different numbers than 00 so it just loops to a new game automatically.
I still don't have any high gear and I still have issues starting the game with the pedal.
Sorry it took so long to get back to this. Its a bitch trying to figure out what went down on the machine and why. Then effecting the repair on that said problem anyway you get it and I am back up a running and ready to continue...
Now where is my pp2 board set at... lol
Lets see if I can get that one repaired so I can test your other file.