So, just did a full rebuild on an 89. All new bearings and seals all the way around. Bored and ported the cylinder myself (with a little assistance from KOR YouTube). Of course tors, oil injection delete. 32:1 fuel mix. New Toomy B1 exhaust. V-Force 4 reeds. 310 main and the needle clip is in the third notch as instructed per Toomy guidelines. Anyway, I've done the heat cycles and it idles great. Seemed to not have much power and a little bogging. Air screw doesn't seem to adjust. I can damn near screw it out and still idles normal. If I screw it all the way in of course it will cut out. Yes I've done a leak test and re -tourqed the head and the jug after heat cycles. My exaughst is changing colors. And I just can't seem to get it right. Any suggestions would be greatly appreciated. Thanks.