Window Regulator 1970 Challenger

[madmax2b]

So I have to pull the forward edge of the Passenger window up when rolling it up (it's a power window) for it to seal into the jam properly. Have had the door trim off and did not see anything obviously loose, worn, or missing. Is there an adjustment, and or  a fastener that gets loose? Do I need to make some form of adjustment? The window regulator plastic kit is $100 and I only need to fix the Passenger side, so I'm hoping it's something minor.