the stock smartech electronics are crap! i tried to make drive shafts today, but my metals manufacturing teacher was being a butt hole. i was milling all day. i made the heads of a nut and bolt i have been working on just for practice. next class i will try to make new drive shafts. the ends wont be quite round, but they should work. someone said earlier in the thread that they replace the little bars at the ends, and i am curious what they used. if anyone has anyone knows let me know please.