Welcome Ragnar from Exotic Idaho. Well I thought Idaho was Exotic, but I think Iceland and New Zeeland kind of top it.
With your second gear popping out you will need to get that fixed. It takes an Up-Date Kit T1000008 which was cheap for a while but has become expensive and may not even be available any more. Some of our members have several on hand. maybe we could get one of those guys to let loose of one of their extra ones for you. How about it guys ?
Black Engine
Triumph T1000008 - Best Price on Triumph KIT, UPGRADE, X-SERIES Parts at BikeBandit.com
Silver Engine
Triumph T1000009 - Best Price on Triumph KIT, UPGRADE, X-SERIES,SLV ENG Parts at BikeBandit.com
Only difference is the color of the paint on the back cover that comes in the kit. I guess you could paint it the other color if you can only get your hands on the color you don't have.