ORIGINAL: Crazy4Flight
Most ARF's have weak glue joints hot melt in place of epoxie.
I heard of a firewall, on an ARF, fall right out the 1st time the motor was started.
Did you notice change/loss of throttle?
I had loose firewall eengine would rev up/down depending on how it was moving.
I couldnt lower the idle after landing. it was taxiing so fast i couldn't catch it. I had to put it in tall grass.
Gorilla glue is in its destiny. it will not move again.