Making progress.

After switching engines on the P-63 and Polynesian things went better. I removed the head from the S/T and found a .025 shim. I figured that was too big and installed a .010 instead. The engine runs much better now. I had 65 foot lines on the P-63 and 64 on the other. I tried the 64 foot lines on the P-63 and found it flys a lot better and has a sharper corner too. The drag induced bow in the lines must have been causing springyness in the controls. I cut a foot off the longer lines. I may get out today between the raindrops.