Main Motorcycle: Thunderbird 1600
Join Date: Sep 2011
I don't think this is a triumph issue. My last bike, Kawa Vulcan, did the same thing. It is an issue with how motorcycle clutches are designed. They don't do very well at shifting when stationary. If you downshift while rolling to a stop, you shouldn't have that issue.
If you have to shift at a stop, release the clutch just to the beginning of the friction zone as you down shift each gear, and it should shift just fine. Obviously, cover your brake, just in case you let the clutch go too far.