Yes there is no rush Ian, so you actually take the spring out of the firing switch ??
Yes that's basically it mate. Sometmes you have to sand the pin in the switch, or do a bit of modding, but nothing too complicated. I'll let you know if they fit straight in or if anything needs changing.
They get on and say single to Sloughit, they mean single to Slaithwaite, good job I know where it is 