I keep reading about crashes caused by crossed control, especially ailerons because of the constant on/off wing - plug in/out. I found heat shrink big enough to slip past the servo/extension plugs. On the #1 aileron, I pushed the heat shrink past the plug until it was only covering the last 1/16" of the plug and extending 1/2 past down the wires. I shrunk it to the plug, and not to the wires. Do that for both #1servo and #1extension. Now you have what feels and looks kinda like double length plugs on ONE side's plugs. The heat shrink does no effect the ease of plugging/unplugging. The two marked/long plugs go together, as do the two unmarked/regular length plugs. Foolproof even in the dark!