As an update for those that care:

I picked up the new OS .75 AX this afternoon. It fits right in place like it was supposed to be there. We joked at the LHS about it being able to hover.. ha.. probably will!! But, it will surely get off the ground in high grass..

I also put the proper servo arms on the aileron servo's. I had some heavy duty ones that were quite long as temporary ones just to hold the hardware in place. I put some JR servo arms (using the Spektrum servo's).

I then got out the dremmel tool and ground a little of the left cheek to provide some clearance for the needle valve stem. So, after I did that, I wanted to seal the wood where I ground out that bit of cheek, so I mixed a batch of resin and coated the entire engine compartment as well as the spot I ground for the clearance. Then I useed the left over resin to go around the edges of the covering where it meets wood, as in the wing saddle area and on the bare wood at the tail. It is now curing.