These kinds of things always get Twixxie teary eyed.
When I needed help on some AR related stuff, one of the greatest Arfommer's of all time (Obi Dan Kenobi <---that's actually his code name so set it and forget it) comes to help. I have a big spot light that shines a giant BFL in the sky and within minutes he pulls up in his jet black pick up truck with a jet engine sticking out the back and his tool belt that has like this blue foamy spray on it and an armorer's wrench shaped like a bat or an armadillo or it might be like a one of those raccoon looking things that aren't actually raccoons but some kind bear or lemur... either way, he has these really awesome tools. So long story short, he helps me fix my AR's or replace parts and I give him a soda sometimes but he would definitely help without the soda because that's just how he is, he's a good man.
Anywho, maybe there's someone near you who's also knowledgeable who can help.