Transmission issue

Mittzy, that is some machine. Looks brilliant with absolutely no chrome. Chrome on motorbikes is like gold on women.
 

There have been several threads in the last six months where oil has been discussed in the context of how it affects shifting.

Captains' opinions are all over the place. Near as I can pull out of it, whatever you do, use motorcycle oil, and beyond that 10W-50 seems to be a consensus *except* for folks to the far north.

The beauty is, if the oil is going to make a difference, you could try both, and put a couple of thousand miles on each, and see if it makes any difference to you -- the only person who matters.
 
Is the bike a unit engine; same oil for engine and gearbox?