Well I've managed to twist my second forward drum shaft off in less than 50 miles trans worked fine for 2 years now I can't seem to keep one together is there something causing this besides my right foot ? the cars not making any more horsepower than before just seems to want to keep twisting the shaft off I will put a steel one in if it will fix it but don't want to spend that kind of money if something is causing the shafts to twist other than being the weak link.