Pull on the control surfaces firmly when doing the hinge chec... amazing how many have used medium CA... and when you give a tug... the aileron comes right off.

Got those little pieces of fuel tube on the clevices? They help keep the control system together.

Make sure the airplane looks like its adequately fuelproofed. Bare wood needs to be painted with epoxy or some other fuelproof coating. Once you start fuel soaking... you can't completely cure it.