Success! Did a lot better this time combination drill out weights and new belt didit ! Better take off this time and climbs better. I was able to squeeze 35mph on the flat. But I forgot a plug chop, so my throttle was getting slow response after warm up, I hope that's what it was. Pulled the plug and checked it with manual. Running rich.black . And oily at the bottom.Gonna WIKI it. Any ideas? (edited)