Hello all,
The gun is soon to be sent to my local firearm dealer for a 72 hour inspection period. I showed the dealer(a friend with many years experience of British guns) the photo.His first thought is in agreement with those of you above re the top lever spring peg theory.He demonstrated with springs and parts in his workshop, I now understand the possible scenarios.He agrees they are almost exclusively blind but has seen,in the past, pins through and flush with the strap(similar to the pin at the rear of safety in photo) We will hopefully have the answer soon(and hopefully a relatively easy fix). Many thanks to all, mrwmartin

Last edited by Mr W martin; 01/05/16 02:21 PM.