I took 3/8 thick steel plate that was 3 inches wide and placed it between the mount and the frame. I drilled two holes in the plate and bent the metal strip down to the bolt running through the bushing and drilled a hole there. I passed the bolt through the the bar making the the rear motor mount solid and eliminated my wheel hop. I have the poly insert in the front too. I have no worries of breaking the shafts as much as I use too. I still have tractions problem because the last time I just went full throttle on first gear with my Azenis on the track I smapped the stage2 shaft on boost. So I am still scared of breaking another shaft but the wheels are now smooth when they are burning rubber. Wait till you get your going strong if you are near me which you should you should be able to spin both tires on boost in third gear when it hits boost at 65 mph and gain grip at 75 mph......