Right now I own a 1990 prowler 440. The sled has 7900 miles on it right now. Now when go to take off, instead of taking off, where the rpms are high, it will sit there do a very slow revup and then it will go. When it does that it takes about 5 seconds, and sometimes it will there and do this thing where it sounds likeit has no power . Some times you have to lift the back end up, rev it up, in other words flore it, then drop it, so then it will move. But it would be a big help if someone knoe how to fix it.