Sounds like I'm in for a disappointment on the Harrier. I only have about 12 flights on it and I'm having too much fun with the KE spins, waterfalls and parachutes etc. Harriers are my biggest weakness, just haven't practiced them yet

The only thing I did notice was when flying out of an elevator the wing will snap (drop) if I don't get off the elevator. My only suggestions from limited experience would be to:
1) really get on the throttle to transition into Harrier
2) or try getting into the Harrier from a Hover.

My CG is 6", I added 2 deg RT and some DT? Tracks really straight on the uplines.

The plane flys fine with the spoileron mix on. I think the turns, walls, parachutes etc. are tighter with the spoilerons OFF.