I put a nut, washers, and a bolt, through the holes in my bobbins, today, tightened until the actual bobbin turned then ran them round and back a couple of times each. The dirt on my thumb was from one bobbin. Loads of sh1t fell out, I did this dry, as advised by the Triumph mechanic I spoke too. Then sprayed them with brake cleaner. I am washing and dissembling the calipers at the moment. Before. After.
Brakes are now working. So to celebrate saving the money, I thought I needed to spend. I bought a new back tyre.