Might try putting the timing back where it was, you have to start somewhere. I just finished my third 290 to 390 conversion with a cheap $25 china kit, it runs like a scalded dog with only a muffler mod. Easily cuts anything i put it into, mostly oak in the 18 to 20 inch diameter.Dont have a tester atm...just by pulling on it seems good but I know thats not exact