First off, I've owned this gun for 40 years but have only just taken up shooting again.

Secondly, I'm no engineer so have very limited gunsmithing capabilitiies.

On starting to use the gun again I couldn't believe how noisy it was - but having read umpteen 'advice' columns came to the conclusion it needed a new mainspring.

So, after months of searching YouTube and the net later, for advice on 'how to', I've finally managed to fit a new spring to my BSA Lightning.

I think I made a mistake by removing the trigger assembly - advised to do so in the video - but apparently I'm now told, is not necessary.

Having failed to take photos of the disassembly (doh!) I'm now faced with trying to reassemble the trigger.

I've managed to secure a photo off the web which shows what goes where - see pic

However, when I put the bits together the gizmo marked 'A' doesn't make contact with the 'gizmo' above - unlike the photo where they make contact.

I'm assuming this is part of the trigger release mechanism?

The 'spring' at the top has two prongs - which go either side of the top plate – and sit against two lugs.

In the image you can see the outer lug being pointed to.

When I move the safety catch from Fire to Safe nothing happens within the assembly - and I'm assuming it has something to do with part 'A' not making contact with the upper plate?

Can anyone offer any advise on what I'm doing wrong and how I can resolve matters.

Help!!!

P.S. if there's anyone with the expertise needed not to far from Macclesfield in Cheshire give me a shout.

Thanks