So, I got to try the new stage 2 engine tuning on the grand Marshall and I took off the front brakes for derbying. I found that when I used the brakes while it was in gear, the drive Shaft would snap. I thought I must have hit something so I tried it again, and watched the entire axle and housing slowly rotate forward and the drive shaft broke. I'm no genius, but that seems a little fishy. Any word on this? Oh and I really enjoy the new setups. Great motors for derbying and the welded rear ends hook up pretty well.