well here's a note for all you helpful people, thanks for the tips, after going through the engine I have had trouble with, I poped the rocker cover off and what do ya know the rocker arms were off a bit, the larger feeler gauge .010 slid through like a hot knife through butter unfortunitly when I went looking for a 5mm wrench I couldn't find one so I went ahead an ordered a valve adjustment kit for my OS, I have 4 so I figured I needed one anyway on thing about the 4 stroke if its out just a bit it will not run at its best, where a 2st is such a simple engine there is not that much to get out of adjustment, definatly for the beginner a 2st is much less of a hassle,seems like every time something gets out of wack I learn a new trick or how to solve a problem with the 4st, I don't even hardly touch my 2st and they run great.
not like I am giving up my 4st, there the perfect warbird engine for sure.