I would be very hesitant to remove the bolt stop cover on an all matching example. With the ejector removed you can use a toothpick or a plastic pick to loosen up the stubborn gunk. Then put the assembly with the ejector removed in a small pot and boil the parts in water for 20 minutes. That should do a good job of further loosening grime/dirt or debris. Then follow up with a kroil soak.

I would only mess with the bolt stop cover if it was actually broken as you run a BIG risk of breaking it especially during reassembly.

 

+1 what mauserguy said. not even remotely worth the risk.

 

Sounds like good advice... I'll clean it, boil it and kroil it. I'm going to leave "well enough" alone!

 

Interesting! I had no idea that one should not remove the large flat spring from the bolt stop/release. This assembly was throughly gunked up on my recently acquired, all matching byf42 98k. After removing the hinge pin/screw, I removed the whole stop/release from the rifle and tapped the spring off forward. After cleaning the whole sheebang, it was easily reassambled and reinstalled.

 

Glad it worked for you but I think you got a little lucky. The spring steel is notorious for breaking. You didn't have any issue with reassembly? What was your procedure to get the opposite end of the spring over the bolt stop lip when tapping the spring into position?