Hi Mark,

The recommended CG as you know is 305 mm AFT of the LE of the Wing. This is exactly where the 3mm wing bolt hole is located on my model and when the reference is transferrd parallel to the Main Spar it ends up being just outside the second outer wing fence. My CG is actually about 295 mm, the model balances between the second and third outer wing fence as indicated on the photo (I hope the quality is clear).

I could move the CG back but with the extra weight it handles well and is very stable. I ended up using a PowerBox Royal with TWO Duralite Lithium-Ion HC 4,300 MAh, 2S2P and they are mounted on the floor between the 2 pilot seats.

I can take some photos of my installation and post it if any of you guys are interested.

Cheers,

Darryl