I tried to mention some of this stuff in the review, the bearing mod that Peter Hulme Moss showed me is better than the collars that TTech have on offer.
The review is now LIVE so ave a look, spent bloooody ages on it, possibly went a bit over the top.. but there ya go, i dont do stuff by halves.
http://www.oople.com/rc/photos/reviewx10/index.html