Well today I had some ramp time and finally sorted out my rear prop issues. Ive replaced the rear section of the prop with a low mileage section from an auto (mine's a 6sp manual) and returned it's own front section of the rear prop with a new guibo and support bearing and carrier. All my cluncking on the transition between acel and de-acel have gone courtesy of the second hand rear section and all my vibrations at certain speeds and their harmonics have also gone now ive returned its own front half, very happy.

While it was up in the air I replaced the transfer case fluid as I've had the worn oil message and noticed occasional "skipping" and this has now cleared up too, so all in all I'm very happy. Except, I've today discovered that INPA that has until now served me well so far with my E53, my wife's E83 and my E63, doesn't let me delete the worn oil message or does it do the transfer case recalibration procedure. Looks like Im going to have to bite the bullet and find a laptop to run a copy of ISTA.