Mark, Why not? I think that a the pitch sensitivity is due to two things, short coupling and bad W&B. The S, helps with the short coupling and you can fix the W&B. With everyone putting on bigger engines and EXPECTING higher airspeeds, it makes sense to look at balancing. For one, higher airspeeds will increase the opportunity for developing flutter and the bigger engines put more weight forward to offset the weight added to the tail section for balance.
There is a time for building and a time for FLYING and the time for building has expired. See N64KR at http://KR-Builder.org - Then click on the pics Daniel R. Heath - Columbia, SC See you in Mt. Vernon - 2005 - KR Gathering