I am considering adding 1.25" spacer in the rear because during the extreme frame twisting, the 35" MTR sidewall is rubbing inside the wall, not the ceiling as I expected. So adding spacer will move the tire a bit away from the wall, my guess.
Rubbing the wall is not bothering me however it added lots of fiction as if something is holding me back, forcing me to add more gas than I normally want to.
At first I thought of putting 1" steel extension to lower the rubber bump to stop the rear axle from going too high but the rear flexiblity is reduce.
Regards,