grittykitty,
That's great info at the right time! I'm done with the assembly on my Avistar and am going to be adjusting the controls surfaces (alignment and throws) as well as balancing this weekend.
Perhaps you (or anyone tuned in) could give me some advice on the latter. Frankly, I'm a little confused about how to balance with the rx/battery tray provided with the kit. It seems to fit only in one place (in the open space between the servo tray and fuel tank), with little or no room to move back and forth. I'm thinking that I might toss the tray, find the best batt/rx positions (wherever they may be) for the balance point you described, and then velcro/strap down the rx and batteries in place (I read a technique here on RCU where you CA the velcro to the bottom of the fuse, then strap those babies down!).
What do you think? Or is there a way to make it work with the provided tray?