Clearly we are different kinds of people...why do you want to molest an unmolested gun? I would take the barrels off, clean everything, lubricate the surfaces you can see and reach, maybe blow out the nooks and crannies to get the weed seeds and powder grains out, put the barrels and forend back on and take it out and shoot it. With safety glasses and hearing protection, after making sure the bores are clear and the safety and triggers work. If it doesn't shoot, THEN do something about it, or better, get somebody that knows these things well to do it.
Why mess with it if it ain't broke? Unless you enjoy visiting the gunsmith with a shoebox of parts and a sheepish look....
Now if you want to BE a gunsmith, that's a different thing. First, buy books.....
Just my (clearly not TOO humble) opinion. (But I have been THAT guy, with THAT shoebox!).
