RCMac,

Don't forget to rebalance your plane. When you move the mains forward, you'll change the CG forward as well.

As for the steerable tail wheel, I also have a taildragger trainer with a rudder that doesn't extend below the elevator. I used a Sullivan tailwheel bracket with a pushrod running from the rudder sevo to an arm I drilled through the brass bearing. I hope you can see enough detail in this picture.