I converted my X9 to PAL after a lot of dicking around, it was noticeably better than the 2950, but replacing the power supply components with better ones in the 2950 improved its picture quite a bit.
Oh wow! That’s awesome. You should post the details (on Fanres that is). With my limited knowledge of electronics I’d believe (in fact I’m very certain) that the player would no longer play NTSC - unless you were willing to connect up one switch per modified circuit like this:
All up PAL, all down NTSC.