KJ Works 226 not cycling

[Davet]

Hello gang, got a minor problem with my KJW 226 - it’s been unused for 6 months or so, having worked fine, but came to test it out for a bit of target practice today and now it’s not cycling properly. Get one or two shots off then the slide’s not recoiling fully to pick up a BB. Tried different gases and no real difference, taken the slide off and lubed the rails, still the same.

Any ideas/suggestions? TYVM