Test flights

I got to the dog track yesterday and flew the hemi .35. It gave me trouble and I finally found that the tank was moving down after some maneuvers. I put in the supplied head shim before finding the tank problem and can't decide to remove it or not. The engine will run good in inside maneuvers but wont break into a 2 cycle in outsides. I have moved the tank up a bit but the wind is too strong today to test the change. I got the right front bearing from Fox and assembled the old .40 and ran it on the bench. I removed the $20.00 Fox and installed the old .40 to see how it runs. I opened the combustion chamber with a half inch spherical carbide burr. Should work. Looks like next week before the weather calms down for flying.