My 1970 M20/F has the Postive Control system by Brittain. I've had the Mooney for 4 years and the PC has always worked great. Now, for some reason that neither my mechanic nor I can understand, the PC stays engaged even when I depress the PC button on the yoke, or pull it completely out. The mechanic cleaned the vaccuum lines and said he fixed it. I took it up and it is worse than ever. I have to use two hands to turn the yoke, with or without the button depressed, and my Auto Pilot won't track correctly. When the system was working correctly, even when it was engagement I could easliy over come it with on hand. Now I have to use two hands to even get it to move a little. On the ground it is difficult but once I have vaccuum built up in the air it is really bad.
Has anyone else ever had this problem? Any suggestions I could pass on to my mechanic.
Thanks,