Engine run problems.

The Wild Thing flys very well. The engines (I've tried two) run great on the ground but go lean right at launch. It may be the fuel tank location and I've added a brace to hold it in place. I'll try that next time out. I had some tree branches trimmed and left as I figured I would chip them up. I didn't plan on the branches not wanting to go into the chipper. I cut smaller branches off the main branch and they went in but still gave me problems. I sharpened the cutters and figured that I could shim them to make them take a bigger bite as I feed the branches in. That worked very well and the chipping now goes a lot faster. I only used a .010 shim on the blades.