Thank you for your reply. My main concern was the strength of the coil springs which "tension" the sears. When I remove the pivot pin it feels as if it will be very difficult to relocate them when re-assembling everything because of this. Is it normal to have such strong springs ? I wondered if a previous owner had preferred a stiff trigger release and had replaced them.
I'm photographing every stage and noting every mark. One thing I have noticed is that virtually every part inside the action and fore-end is stamped with the last three numbers of the serial number, in this case 797, from 214797 which seems to personalise everything.
Regards
Thruxton.