What kind of "tweaks" are you thinking about?
In regard to my cousin....I'll gladly let him use my DX6i if he'll get the other parts and pieces. Building an RCH Trainer for him would be simple enough. I'm going to have to build another one for me. Mine crashed pretty hard today, but that's for another thread, lol.
This 540 is a blast!!! Very maneuverable in high rates with high expo. I can't wait til I can order the new motor.
here is the video from today.....with high rates
RCH 540 Test High Rates - YouTube
Here are the Dual Rates and Expo settings that I'm using currently:
The servo travel is set for 150% on aileron, elevator, and rudder
Low Rates:
Aileron: 25% D/R 0% Expo
Elevator: 25% D/R 0% Expo
Rudder: 25% D/R 0% Expo
High Rates:
Aileron: 75% D/R 60% Expo
Elevator: 85% D/R 60% Expo
Rudder: 55% D/R 20% Expo