Thanks Arwyn,
I'm sure potts will be grateful for that info! I too use a modified screwdriver as an alignment tool when inserting the pins. My latest version is an old cut down electrical screwdriver with the extended plastic shielding but if fitting the new hardened chrome pins I'm not sure of the benefit that will give, mine are still stainless and I like to think it helps them as I jiggle it to align them!
Lorne that's exactly why I have been experimenting with brass rear fastenings to the chassis rail./BRB I want to know for sure that I'll get a failure point there should I be unlucky!