Ok...I'm back.
The problem is still happening... after 2-3 minutes of running the throttle will stick open. I can't make it stick when it's not running, even if I repeat the same pattern I did when it was running.
I monitored the car running while stationary and noticed that the throttle will stick open... i.e. when I release the trigger the servo does not always return to the idle position.
When the car isn't running it always snaps back... at least so far in my testing.
Something else I noticed during the last test is that if I touch the glow-plug heater to the heatsink the servos twitch (as long as I have the power switch on). If I run that heater up and down the fins they twitch on every fin.
This could be normal... I don't know... I just happen to notice it.
Also I noticed that the throttle trim is turned all the way one direction.... is there something I can change so that we can leave it more in the center so there is still some available adjustment?
Any ideas of what I can look at before running it up to the LHS?
Thanks,
-TK