Several sweaty hours of work later, the servo tray is now in it's new forward position, new push rods are in place, and the model now balances with the battery inside behind the tank with the Rx. I did have to add a small additional weight of about 25g onto the firewall. I also decided to balance the model at a point 11cm behind the leading edge, which is the back end of the area recommended by Kyosho but still ahead of the other lines in DaRock's photo. Thanks, BTW, for posting that. It gives me confidence that I won't have a repeat of the wild ride I experienced on the first flight of my Seagull Spacewalker -- which ended disasterously.

I agree that I'll just have to take my chances with the tank position. I didn't have much of a problem with this with my EIII that had a custom tank located a couple of inches above the trottle. But we'll see.

All that's left now is to do a few final set-ups and double checks. Then it's out to the field for some engine runs.