@corellian77
From what I understand, g-force wrote the script specifically for the PAL version of ROTJ because the master is different and the issues are slightly different. I don't think it can be easily modified to fit the NTSC by changing a few lines: it would need a significantly different script.
@Lee
I assume you would apply the script beforehand. If so, you would need to decide if you wanted to keep g-force's tweaks or make all the adjustments for yourself.