One broke, and i've put the other somewhere so safe I cannot find it! Its the cover on the RHS of the barrel that covers the wiring connections, If anyone can help would appreciate it.
Found the little blighter, its so rusty it had camouflaged itself into the lip of my bench!!!!! Now I have yet another bolt to extract on this heap! But the new Wilbers does look like a Cherry on a pile of sxxt!