It appears, as though, every creature on earth understood once a servo is selected to be mounted in the main wing & assigned duties to control the airlerons, than it ceased being an un-designated servo & would be, here after, known as the official, re-designated, aileron servo & even my dog is grinning & shaking his head, yes!

I'm just happy to be back in RC again. I think re-learning can be more difficult, than learning, in some instances. This may well be one of those instances.

"Dog" is still looking over my shoulder & grinning, so, I guess, there will be no main wing modifications, this time around.

What was the "oops" you experienced on assembly & which engine did you choose?