I may replace the shaft as a possible remedy, but I can't figure out why the pitch on the blades would change after I had initially set them just because of running up the heli. The pitch setting are completely out the window now, and I'll have to start over again setting up all the linkages on the head. From a mechanical standpoint it does not make any sense. If you set the pitch on the blades by adjusting pushrods and linkages, than the only way to adjust or change the pitch settings would be to mechanically adjust again, which I didn't do. This is becoming time consuming.