I have modified the T-Rex XTR model from EzFly.se to be a little more realistic.
You can download both (original & my eCCPM version) here: http://www.dacsa.net/heli/trex/Trex450v2EzFly.zip
Unpack to heli/align directory under your reflex installation.
The model flies very close to my real eCCPM t-Rex, however its a little _less_ stable in hover then the real thing just so it simulates drift while doing piros a little better.
Also if you use throttle/pitch mixing to start it from zero throttle, it will spin a full turn upon startup, dont know how to get rid of that.
Else you can use throttle mixing and setup your own curves on your radio.
I also recommend lowering D/R to about 60% for the rudder else piro rate will be much higher then real life.
I havent tried auto's with my real T-Rex but I made it hard in this XTR model, so if anyone done real autos with your T-Rex, please try the model and see if it is like in real life...