Pang and Sophia RGB ?

[Level42]

After months of being inactive I recently again found some spare time to play around with the A8 a bit again.....

 

I wanted to play Pang since I hadn't played it for quite some time, but to my surprise it's not working, I'm getting a rainbow colored screen after the "Pang" ATASCII screen.

 

Now, I have Sophia RGB on board and I've noticed that some other games ID this as a NTSC GTIA. I have long forgotten if there's any setting for this on Sophia ? 

I also recently upgraded my U1MB to the latest full ROM set. (And I have AntiX inside, so I can use both PAL ANTIC or NTSC ANTIC, but neither work).

I actually don't remember if I played Pang on my main 600XL with all these extra's or if it was another machine (Standard 130XE). 
 

Anything I can do to solve this ?

[CraigsBar]

It works on my PAL130XE with Sophia RGB, Dual Pokey and U1MB. Perhaps it's a PAL/NTSC thing??