I recently misplaced two nuts that hold the case to my dad's gas powered craftsman gas powered chainsaw (18 inch blade, 2.6 cubic inches). This chainsaw is pretty rusted and beat up as it is so i'm thinking about buying him a new one. You guys seem to know your chainsaws so I was wondering if anybody had some recommendations? I'm not looking for an industrial strength chainsaw, and price is an issue. I'm looking for something under $200. All responses are appreciated.