I'm ready to get what I need to sharpen the chain on my new saw. I figure I need a round file, file guide, and a raker gauge. Believe it or not, there is no info in the owner's manual about file sizes or angles; it just says to buy the file sharpening kit at sears. I may do that, or might buy something online. If the latter, is there anyway to figure out the file size, angle (it's not stamped on the cutters), and depth? I tried calling the number on the manual, but no help there. Anyone know what these are for my chain?? The chainsaw is a 358.360831 with an 18 inch bar, and it has the chain that came with it (used only once so far). Looking online, I see stuff like this: http://tinyurl.com/3bt7uc http://tinyurl.com/2t4gkl http://tinyurl.com/2ngg8r http://www.jackssmallengines.com/chaintoolfile.cfm Comments? Thanks!