hi,
1: yes, you need disassemble the funnel from exahust and fixing 3 screw inside, it is also very difficoult to make hole for fixing exahaust support.
2: yes i use itrap 40 size.
3: I use Emcotec Dualbatt regulator with two 2S lipo 1300 in the nose and another one same size for gear fixing to the side of UAT.
with the turbine battery placed on top of main tube, the CG is perfect.
I try to re-link the videos again...
The model in flight is fantastic, precise at the control, neutral, with K70 the speed is very very high, but when you need to go slow, there i no problem never stall.
I'm very very satisfied.