Thanks Bryan.
Just a couple of better pictures to clarify my battery mounting. The CF rod on the battery tray stays in one of the many slots to hold the batteries position and is adjustable to move the CG.
The battery hold down screws into a blind nut in the battery tray. The second CF rod is a spacer so the hold down can be tightened without deforming and breaking it.
First flights were to be today but 15 to 20 mph winds are more than I like for first flights
Stuart C.