Caster how to add some

[Colin Wilks]

This is the spring on my RP, showing the imprint of the forging in the leather packing piece I found there. The leather shows the shape of the forging quite well. 

I presume it's the forging you wanted to see but I didn't photograph that I'm afraid.

I recall replacing the central bolt with a 5/16" BSF caphead with the head turned down slightly to fit the hole in the nosepiece.

I bought some 3mm thick leather to make a new packer, but was advised not to fit it, so mine went back together metal to metal with no apparent problems.