I’m no expert in adjusting doors, as mine would attest, but working alone, I used a floor jack to prop up the door between adjustments. For fine adjustments, I wrapped a dead blow hammer with a towel and while the hinge was loosely snugged, I would hit the door to make the adjustment. Did you look at any of the trunk monkey videos? They’re really funny!
When you grind those stop washers, you need to make a new stop. I think there’s a thread here somewhere about a guy who did this. I don’t remember specifically but I don’t think that bending the window tracks was required.