[RoscoeC]

I'll throw this in. I have an M2000 that I bought new. The only problem I ever experienced with it was the first time I shot it. I didn't want to cycle. I had done the same thing you did, i.e. I broke it down and cleaned it. I lubricated it with a lubricant that was fairly heavy and tacky. After about the 3 or 4th FTE, I took it to the trunk of my car, broke it down, sprayed everything off with spray cleaner and lightly sprayed it down with Rem Oil. I have never had another issue through about a thousand rounds.

Point is be sure to use a very light lubricant like Rem Oil or whatever, just as long as it is a thin and light oil.