Well, I'm happy to report I have it working like I'd like. So now, my servo is attached to the Aux3 channel on the 8 channel receiver because it was the only unused port I had. In "system setup" go to the "channel assign" section, find aux3 and make sure it's set to AUX3:Aux3. Select "next" to go to the "Channel Input Config" and changed #8 to Aux3: RTrA (or whatever you want to use to control Aux3). For example you could use the value "RTrD" in which case the values would swing +/- 29% (because that the max swing you get with a digital trim switch). Then, in "Servo Setup" change the "TRAVEL" values to whatever you want for the Aux3 servo...in my case I chose 150/150 to get maximum movement. Note: in actuality, you wouldn't need to tweak the needle that much, say if you were using it for fine tuning for weather changes; but, I was starting from ground zero with my heli so I had the main needle open 1 1/2 turns. In actuality, it's going to be down somewhere about 1 turn for peak performance (O.S. 50 HELI ENGINE in a TSA 600N sitting at about 9-10lbs. weight).
There you have it. Problem solved!