You're gonna enjoy working on it and when you're finished you're gonna have a great little game getter.....
BTW... like I said, mine all shot pretty decent right from the box after I simply cleaned all the chinese mystery oil off them so just go ahead and shoot em for awhile and have fun.
Also,,,, all 3 of my B-3's absolutely love the cheap GAMO pointed pellets.... (Gamo Magnum and Gamo Master Points),, matter of fact almost all my chinese guns like em which is strange since all my other more powerful rifles hate any kind of pointed pellets. I'm thinking the lower velocity/power of the chinese guns is what makes the pointed pellets work in them,,, just a guess on my part.
Anyway, I only mention it because most "sports Authority" stores and "Dicks Sporting Goods" stock the GAMO pellets. Don't know if either of those chain stores are near you but figured I'd mention it just in case they are and you're looking for some cheap pellets that may work well in your gun.
Jeff