I got my MS390 out a couple of days ago to get it ready to tackle a big Water Oak I've had my eye on for a while. It seems I had broken one of my cardinal rules: "Always clean up the saw before it's put away, particularly if it's going to be unused for quite a while." What would have meant a quick brush off and wipe down at the time (late last summer) was now a gooey mess as sawdust had soaked up the oil film on the saw. It took a lot of scraping, wiping, etc but I finally got it all nice and clean again. I'm going to touch up the chain, add fresh gas and, hopefully, it should fire right up. I renew my pledge to never again put away a dirty saw. Forgive me, my brothers. Another issue..... Whenever the saw sits for a long time I find that quite a bit of chain oil has leaked out into the saw case. Pure, clean oil. I only notice this when it has been sitting for quite a while. I suppose it's not a big thing as long as I keep the reservoir full when running the saw. Some kind of seal or gasket problem?