Dennis,
First off the flanged bearings are availible, but. I have been to the Spring Hill Autogyro meet named after Hal DeBolt.. As much as he tryed he was not very successful in flying.. He was a designer that always had new things going on in his head..
So listen to Mickey..I have all the PT series and they all fly good..I have most of Mickey's and they fly good also. And have flown his Mini Kellett.

If you want to be sucessful fly a proven Autogyro..

Good Luck