You can bring it to mine and I'll take a look.
NN168PB (not too far I dont think)
let me know, I dont mind. And if I cant fix it, I know a man who can. Sounds like the poppet needs re-seating like McLovin pointed out, but it could be something else for sure. Best thing is to have it here in front of me.
Don't do anything silly. If something seems stuck, dont force it.