I recently purchased an LMT MWS with a .338 Federal barrel. Haven't fired it yet but wanted to swap out the barrels. I removed both of the bolts and could not get the barrel to even budge. I had to end up pulling the bolt back and letting it go forward to even get it to move. I eventually got it out after a long fight and using the bolt to push it out. I tried to put another barrel in and that was difficult as well. I was able to eventually get it back in but the forward bolt now will not slide back in. I can see that there doesn't appear to be anything blocking it but it still wont go in. Any suggestions and is there something I am doing wrong? I was under the assumption it was not suppose to be this difficult.