RE: Glitches
the switches i was refering too are kill switches two were required at most fields do not know if that still applies on switch should be manually operated the other by radio,usually a micro switch activated by low throttle low trim will do.i use a dubro wheel colar on the nyrod throttle linkage to activate the micro switch,all they do is ground the coil to kill the spark,that way engine will not fire until they are turned on .engine could fire from just turning the prop with residual gas left in carb.glitch busterrs are sold by ace r/c should be available at lhs,they are for use where servo extensions are over 6"long and could generate rf nois.engine mounting bolts will not cause a problem
one thing i forgot was no metel to metal contact on any lingage.
if you need to see picture of kill switch setup let me know and will try to post one.let me know what else you need help with.