The YS91 (only) weighs 24 oz., I believe. Even if I place the battery (800mhr) on the horizontal I need 4 oz. of lead back there to balance at 4 inches. This is absolutely ridiculous. I didn't use the dual elevator servos in the tail and that was a mistake. Thank you for all the helpful replies. I really appreciate it. I may need to put a YS120 on the nose and add another few Oz to the tail. I really hate to raise the wing loading any higher than it is already, though. I might buy a 5 cell pack and at least get some use out of the extra weight. I'll take your advice outssider about the way rearward battery placement. Is there any thing wrong with using a servo extension to extend the battery wire length?
John