So after months and months of hand flying due to the Brittain taking a dump and Trutrak/Garmin failing to step up, i finally broke down and started troubleshooting my AP.
first the hoses under the dash, no leaks but replaced anyway.
red and green hoses, no leaks.
rear red servo, 2 holes, someone had tried fixing with rtv sealant. picked off the sealant, applied scotch 33+ electrical tape and BAMM, fully functional Brittain Autopilot.
thing stopped rolling, holds heading, follows the magenta and green lines.
if i had Altitude hold, think i'd be set.
now, question, how hard would it be to just find replacement rubber for the servos ? looks to be very thin < 1/32 rubber, maybe inner-tube material.