Clutch slip

Yeah, after seeing where Triumph saw fit to put the clutch slave, I've been syringing out a bit of fluid from the clutch master every so often. But there isn't very much in there. And I'm not to sure there is much circulation up and down the line.
 
Yeah, after seeing where Triumph saw fit to put the clutch slave, I've been syringing out a bit of fluid from the clutch master every so often. But there isn't very much in there. And I'm not to sure there is much circulation up and down the line.
I've heard people debate over the circulation, but I think it does move as you see it becomes discolored again fairly quickly and after many rinse and repeats over time it starts to become clearer. If you haven't tried bleeding the MC give that a try. I must have a very small leak somewhere because I have to do that from time to time and a little air always comes out. Afterwards I have a firmer lever and the clutch works more smoothly. Not sure if it would help your possible slippage, but might be worth a try.

(Of course if you need a new clutch, you need a new clutch, but if it just has air this is more like making an adjustment on the cable or other bikes.)