Wouldn't the first time be the clue to glue it back really, really good?

Compared to some ARFs I've had , the vertical stab mounting design is fairly robust. However, mine was severely cocked to one side dry-fitted. I had to tape and clamp real hard to the opposite side while the epoxy set to correct it.

I do agree that it builds a little tail heavy though. I have the servos, engine, tank and gears installed so far, and the CG is wayyyyy back there, probably 7~8" behind LE. Still, I'm sure I can shift the CG up to at least 6" once the cowl+prop+spinner+battery are added. From what you guys are saying, 6" should fly just fine.