I'm in the process of converting mine over to a BCMA 40cc gasser and have moved the servos to the tail for the rudder. I thought, like you, that this would be very difficult to get them to throw equally but found that once you adjusted the control rods lengths so neither servo hummed they work great. Another reason for putting them back there is to get them away from the EI module and prevent glitching. Basically, if it didn't need to be that way, they wouldn't have gone to the trouble of making it that way. Good Luck!!!