Re: aaaaaaahhhhhhhh god damnit!!!!!!!!!
When you cleaned the air filter did you squeeze out all the excess oil? I've seen guys clean their foam filters but left too much oil in the foam, restricting air flow and richening the mixture drastically. Also, you had the power valves out, are you sure they are adjusted correctly? You could try turning off your gas and see if it starts running better just before it quits (this could be hard on the piston if you do it much). Have you asked previous owner if he has any ideas? Hope you get it fixed. Ed.