Marc,
In retrospect, knowing what I do know about my CG issue, maybe I should have done that... at least in the tail. Ailerons didn't effect the balance nearly as much. At the time, I expected a noseheavy plane, so I "thought" I was helping the CG, not hurting it. [

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At any rate, part of the problem with moving the slots was that they were VERY long, at least twice as wide as the CA hinges themselves. In some cases they would have pushed the "new" slots into areas where ribs were, making me skip over another inch or so. This made for some bad hinge positions, with uneven spacing. Also, the ones on the two ends of the surfaces were right up against the ends so I couldn't get a "new slot" in there without moving it to about 6 inches from the ends. That's just too far from the ends in my opinion.
Again, if I had REALLY worked hard at it, I might have been able to pull it off. But, not liking the CA hinges in the first place, and having bad hinge material, and thinking I was going to end up noseheavy anyway... I made a choice. Now I have to compensate for it. I only suggest that you at least look into the "stability" of your hinge slots on this plane before just CA'ing the hinges in and thinking you're OK. I'm not saying that you should use Robarts like I did... just be aware of the slot problems that I found.
Tom