pt power,
While covering the plane WILL shift the CG, there's going to be very little change with just the wings left to do.

I'd install the servos and receiver to balance the plane (put the ailerons in place temporarily), then the battery pack can be used to fine tune. (Like it said in the other thread.)

Always balance with an empty tank. (If the tank is ahead of the CG.) Filling the tank will make the plane a little nose heavy, but that's better than getting tail heavy as you use the fuel! [&:]

Nice job on the plane, is that a Great Planes PT -40? Had one as my trainer and it sure looks like one.
Dennis-