2.4gigahertz.com/features/receiver-tips.html

I notice you said you put the receiver in a balloon. Futaba states not to cover the receiver as it does not like to get hot. I had a binding issue one race-day due to too much sun light. Had to rebind receiver while clock was ticking down for the start.

What Hitec servo is it. I had a 805MG that use to go over centre every time I come out the corner. Had to keep on giving steering input down the strait. Other boaters use to mock me that I was a bit tipsy.

Cobus

My servo is now a HS-755HB Hitec 1/4 scale running on 6 Volts

Steve - I'm use a mount from warehouse hobbies which lets that 105 degree pipe sit right there, Your right thats alot of heat and
like Freezer said I will cut a plug in the cover to open between runs
I didn't get a chance to try the extra receiver today

Ed you were right - I made a linkage using carbon fiber rod with 6/32 threaded rod running allmost all the way through it, tapped out some heavy duty 4-40 linkage ends - no more binding ! but sure enough the threaded rod was slipping inside the carbon fiber, The Zap gave way to excessive cornering, Drove me crazy, but all better
Thanks again

Great to hear you found the culprit. Great tip Ed! :drinks: