My fine Light Pattern which was shooting like a dream suddenly started spraying lead around like a shotgun. I checked all the screws and cleaned the barrel but there was no improvement, in fact it was getting worse so I decided to strip it down and here's what I found..

http://www.pbase.com/davecthomson/image/118586281

This is the first time I have ever stripped an old BSA and I was pleasantly surprised at how easily she came apart.
I have decided to replace the piston seal with a modern Delrin one, I approached Dave of "Bonnie and Clyde" and he said he will make one for me, he really is a genuine nice guy.

The rifle was shooting at round 6.5 ft/lbs before this happened, I'm not sure if I should replace the spring or not although it looks a bit worn in places.
I looked on Chambers site but there are no Light pattern springs on there. Are there any alternative springs that would fit? Maybe Cadet or Meteor ?
Thanks for looking....Dave...