Do any of you think that possibly lengthing the top right bar one flat would help?
No' Don't think about doing it!
Sure. It will help you get into the wall quicker. If your car is launching , is driving and stopping straight don't monkey around with preload changes.
Besides that lengtheing the top right bar will take weight off the left front and right rear. Even if it magically still went straight the left front would go higher.
Take the time to fully read my article and think.
Ed