Yeah, Chuck, It is amazing. Most of the people that responded have never tried to solve the problem. Yes, a Coleman gear drive with a Marine Deep cell battery WILL, repeat WILL start the stock untouched 450-500's, that is until you put that 'Can Of Compression' in them. Then, they will start stripping out the Bendix mechanism (at a mere $45 a pop) about every three races and leave you setting on the grid. You now have about $200 invested in a starter that requires between 2-3 overhauls during the race season (at $45 minimum each). You now have about $350 invested in a starter that continually is 'iffy' and it has cost you 2-3 races and has a value of about $50. Now, After only a very short period of time, you now really start improving the performance of that big engine and now it runs like a scalded dog. Gee, will that affect the longevity of the starter????????? Back to the original problem!!!!!!!! Darn, Just one problem after another.