Hi all, I own two handguns, a Walther PPK (4 years old) and a SW bodyguard. The SW 380 trigger is too heavy for my hands so it mostly just sits in the safe. The Walther though gets used much more ~500 rounds every other month. It has never been deeply cleaned beyond the minimum that the manual calls for. Now, I am wondering if it would be a good idea to dissemble EVERYTHING and get a good cleaning going?4 years seems to have taken its toll. Inside the magazine well it is awfully dirty in there! It is tough to clean. I'd also like to clean the whole trigger mechanism but don't have any experience doing that. Is this cleaning even necessary?