Ok guys I have a 81 ironhead I just got it put together. The motor was just gone through by the previous owner I know it has 10 over pistons and Andrews cams I put a new mechanical advance and new electronic ignition in it. It will start and idle perfect but as soon as I try to take off it spits and sputters and has no power. It has the stock keihin carb that I rebuilt with the Andrews accelerator pump and I have tried a bendix and it does the same thing. Does any body have any ideas?