Keith, I have used all kinds of shit and never could see where one worked better than the other. I get the Kroil for free so that's what I use. What do you think works best for penetrating and freeing rusty parts?
skeettx, thanks, good to know they have a few parts, I may be looking for some.
So.......I completed the disassembly of the receiver. The biggest issue appears to be a lot of wear between the rotary bolt and the coupler connecting the top lever
So much wear that there is a hole in the bottom of the bolt where the tip of the coupler wore thru.
Questions: Does the bolt usually wear or the bore in the receiver where it rest or both? With this much wear would you bother buying another bolt to try? What should the OD of the bolt be?