As promised, some results from flying after all the mods on my Integral. Flies like a totally different airplane. As much as I fought it last year, it is now effortless and very close to neutral. I flew the P09 several times last week and frankly the plane made me look good. The plane snaps much better without "burying" itself in the snap.

Here is my final setup (which is very different from stock);

Engine YS170DZ , APC 18x11WPN @ 8100RPM static with CP30Heli fuel, NMP Velocity Stack installed.

Engine set at 0 degrees
Wing set at +0.6 degrees
Stab set at 0 degrees.
CG at 158
Elevator throw at +/- 12.8 degrees with 80% expo
Aileron throw at +/- 14 degrees with 80% expo
Rudder to max but 90% Expo

Rudd/Elev mix of 3%+/- to correct pull to belly on KE (adjust a bit differently left and right KE)
Throttle to Rudd mix of 3% to offset engine in pulls and pushes (could put a bit more right thrust at engine eventually)

The stock stab tube/socket is sloppy and results in inconsitent pulls and pushes. I painted thin CA on the inside of socket and honed with dremel tool the tight fit the tube. Takes hours to do but worth it.
The stock wings can vary in weight by as unch as 10 grams and the variance is in the tips (mine were). I trimmed weight so both wings were same weight, but also that the wings balance separately at the MAC. Made a difference in loop tracking.

After many flights (almost 50 or so), inspection shows no fuse cracks, although my plane has what appears to be an extra wide kevlar overlay strip that goes from firewall to turtledeck. I imagine it was added in later models, and distributes the stress along the fuse better than the straight CF specimens. (I haven't seen an earlier one to confirm that the first ones don't have the kevlar, but I am presuming so).

Very happy with it now. This setup mirrors very closely (on purpose) the Carrier and Mueller setup, so I don't think it is a coincidence that I found it to work well.

Regards,

John