sdwenham

As this is just to hold the bolts from dropping back into the CL case why not just use some epoxy or other strong non water soluble glue.
Just put a little blob on the head of the bolt to stick it in place.

Then this will hold the bolt will have no effect on holding the back plate on as the glue won't be doing the work and can be undone with a little heat (depending on the glue).

Sam