Hi all. I've been enjoying getting to know my recently acquired .22 hw77k and have put a few hundred pellets through it already! However, the mechanical noise when cocking (from the spring?) has been bugging me so I decided to have a look inside before ordering a drop in kit.

There was loads of pre-load (50mm) when I took the end block off, and a ton of grease everywhere! So, I cleaned everything up and started to put things back together - and now the spring guide/end block stops just short of the threaded part of the action stopping me from screwing it back in. Anyone know what silly thing I have done wrong?! I knew it would be tricky with the amount of tension, but there is a definate stop just short of where it needs to be.

Cheers, Matt