Logan- I got the info from my brother, who I consider to be nearly an expert flier (I'm a beginner). He dissassembled my blade grips and discovered the lack of shims and worn o-rings. I will qualify my statement about the worn o-rings with this- I had quite a few wrecks with my CPP2, and had to replace the feathering shaft (spindle shaft) a couple of times, so the advanced wear on my o-rings may have been crash related. But all those crashes still occurred in less than an hour of combined flying time. I never could achieve very stable flight at all with the CPP2, and therefore the wrecks. But my brother says the instability was due to the lack of shims and bad o-rings. If I get more info on o-ring size, I'll post it.

Keep us informed with your findings, and thanks!