Please, can any member give me the original mainspring dimensions for a BSA Superstar?
Length, outside diameter, wire thickness, number of coils....

Please forgive me if I don't acknowledge replies immediately, but, I will do so.

Oh, nearly forgot: Can the the barrel weight on a MK2 be removed? Apart from the grub screw, foresight screw and possibly the latch pin - anything else? As it does not seem to move?

Best regards to all.....