I used the term "Mine" loosely. It is actually my son's who is doing it for an RCU Magazine review. He DID add a "U" bracket to the elevators, which resulted in only needing 2 servos in the tail instead of 3, and even at that it still needed about 4oz of lead to make it balance (With an Evolution TPS and the battery inside the cowl)

So I would say to avoid using two elevator servos, and maybe even consider moving one to the radio compartment.