Hi Kevin, I am forever replacing the o-ring on the pukes. Its now to the point I can take the brake apart and have it back on the plane with new o-rings in less than an hour. Seems to need o-rings about ever year on both pukes on each brake.
The bore the pukes slide in are pretty smooth and do not indicate much wear. Lot of the fields I go into are short and I am often on the brakes. I just put different size o-rings on left side and keeping my fingers cross that they last longer.
Drop by BTL some day and I'l check your brakes out for you.
Cheers
Jerry
