I have had this saw for a number of years and have experienced some problems with it now and then. It has had some work and the guy at the chainsaw store said he never would have sold me this particular saw(I bought it elsewhere). He said there are a couple of problem areas, one being the oiler and another, the clutch. I recently put a new bar on it and a sharp chain. Recently, it cuts well at first-only briefly, but then begins to smoke the chain and it will cut nothing. Does this sound like a bad oiler? or could there be another reason/issue. I have been using a cheap Craftsman, which has been reliable and, remarkably will cut a lot of wood without much trouble. I would kind of like to get this Jonsered going again. Thanks.