It does sound like it needs a good cleaning. They aren't that difficult to take apart, with youtubes showing how, its should be fairly simple. I took my first one apart when I was about 13 without any drama, and without youtube or any other instructions. Having properly fitting screwdrivers makes a huge difference, and they shouldnt be hardware store screwdrivers, but specialty gun screwdrivers. The basic Chapman set is about $25 I think, and fits more gun screws Ive used it on than my dads Brownells basic set. Nothing wrong with Brownell set, just pointing out it may require buying more tips to get enough that actually fit anything you may want to work on.
You may be able to clean it adequately without taking it apart. Id use a gun toothbrush with bore solvent in the action and on the bolt, get it damp, let it set a while, cycle the action some, then brush out well several times while cycling it more. I tore one down that felt like it was full of mud, but still worked. It was crisp when done, and Ive had little need to take it apart again even with pretty regular carry in the truck and out in the hills in the past 30 years.
