Nose heavy on the ground - YES I need to apply full up elevator while taxi-ing on grass, and still I have to be really careful not to stop suddenly in a divot, or it will nose over. When I move the CG back, I anticipate that this will be less of a situation. Not a big deal and not the only plane I've had that does this.

Servos - I'm running Expert SL-571 servos all around, except throttle. They are less than $20 each and have 62 in-oz of torque. Speed is acceptable. I've had some on my Global Freestyle and they've served me well without complaint.