Yes I did. I replaced the cam like everyone said to do but didnt work. so I was just screwing around with the valves seeing wat it would do if I tightened them. (keep mind it has to b on top dead center). so I tightened the exhaust to no gap at all and it cranked over great so I set the exhaust to .003 and the Intake on .008 and she pers like a kitten. So i would consider checking the gap on ur valves and if the exhaust is higher than .004 then I'd recommend doing the same method