A buddy of mine was flying his BobCat when one of the elevator servos stripped in flight . He did not notice it until he pulled a loop and on the downhill leg the model barely pulled out...SEVERE pucker factor!!! The point is that he still pulled out of the loop and had plenty of elevator left to land easily. I would leave the split elevator system as is. Seeing is believing! Most everyone that I've talked to has gone to a stronger servo, both in gear train and torque than using the JR wing servos. I used the new Hitec digital wing servos in my HotSpot on the rudders with excellent results. All metal gear train with hardly any slop, metal arm, only 10 mm (3/8th's inch) thick, and they should drop right in to the BobCat with very minimal modifying. I think these have somewhere around 150 inch ounces of holding power.

Kevin