it may be a little more model specific than some of the things youve mentioned wjb , the new radial pumps fitted to the new 749-999 models are a bit of a pain in the a##e ,
just through my experience they need bleeding often the clutch being the worst of the two .
the head of fluid is lower that the old system ,not realy a problem you might think but next time you watch the gp or supers have a look how the brake fluid is is thrown around in the reservoir ,
this seems to allow a little air into the brake master cylinder ...
but i my be wrong.......
