A PAO (Previous #$%* Owner) of my K3 shortened the threaded portions of the top shock mounting stud, so I had to cut them off flush, then drill and tap the cast "boss". (this was a bastard of a job because the "boss" is a super hard item, and I destroyed a couple of drill bits in the process.
At the time I couldn't get any 10 x 1.25 mm stainless threaded rod, or a stainless bolt with a long enough threaded portion, so I tapped it for 10 x 1.5mm and use two stainless bolts with the appropriate spring and flat washers. It's hardly noticeable, and makes shock removal and refitting a snap! Cheers, Terry.