Try any motorcycle dismantler....Pin-wall? if you give them a call, and tell them what your after....they might have a few on the side from damaged fork legs....
Look to see if any additional aftermarket wiring is attached directly to the battery posts......we all have been GUILTY of attaching accesories to our bikes without adding a fuse inline, First culprit i'd look for....Good Luck
The choice is: to reuse triumph sol. center contact OR shorten toyota center contact shaft approx. 1=1/16"
a couple of the write ups implied that choice but really wasn't spelt out....
For nuts ,bolts, and hardware of all trades....plus stainless and other metals.....being that I live nearby a distribution hub.....its a 1/2 hr drive....