Anyone having mid range problems with the 25 let me know. I will be sending new intake gaskets out to the last 30 people to buy engines. (that is when we changed gasket material) After talking to Grifmode4 on the phone I am convinced the problem is a new thinner gasket material we have been using. I believe that as the engine is run a few times, the intake can warp slightly causing a leak in the intake. We sent out over 100 engines with thicker intake gaskets before and did not have this trouble, so I believe this will fix it. I think the thicker gasket can compensate for the slight warp were the thinner gasket can not. An air leak can be compensated for on the H and L side by adjusting the needles. But the mid range will still suffer and be lean. It also makes for a hard to tune engine. I will start sending them out tomorrow morning and if you don't get one and need one let me know. I am very sorry for the trouble. Never thought a 2 cent part could cause a problem

Grifmode4 will let me know if this cures his problem, but I believe it will. I will also inclyde a new carb gasket. no need to reuse the old one.
Thank You,
Scott Ellingson