Omp Build Finished!!!!!!!!!!!!!!!!!!!!!
You should be able to mount the servo (HS-81) on the fuse behind the engine. You have to do some planning ahead of time and make a channel that goes through the wing. Cut and opening in one side (the engine side) and nestle the servo there.
This is a GWS NARO BB a little smaller than an HS-81 but they should work the same way. I love this setup and have had no problems with it.