@mitu Yes, it is!

So I thought I had better post to say that I solved my own problem. I had to get sync from SCART pin 19 on the Pi2SCART's female connector, not pin 20. I did not know about male SCART leads swapping pins 19 and 20. I hope this post might help somebody else out one day.

@mitu

Thank you again for all the help. Unfortunately I can not try advmame because my sd card got corrupted and I had to erase it. I tired to follow the tutorial I mentioned above to manually install retropie as I did before and its not working. I can't git fetch fkms_rpi4 because its telling me permission denied. Guessing something changed? So now I can't manually install it. Guess ill have to wait for the official retropie for the rpi4. I might look into buying a rpi3 instead, all I want to use it for is mame and no other emulators so I don't think I need the rpi4 for that and I can avoid this headache with the rpi3 and official retropie release.