My opinion of low vs high rates... make the low rate be expo... and high rate be no expo... and still have 100% travel available on BOTH. Don't want to have to flip a switch to get that extra 50% of throw in a tight situation. You get the "soft center" (which is normally your reason for doing the low rate...) and you never have a problem getting full deflection on demand.

On that last "dancing" airplane... double check your wheels. I bet they are toed out a touch. (sure can't hurt to check it... and may make ground handling MUCH better in 2 easy tweaks )