So I inherited my Dad's MS290. Last night was the first chance I had to check it out. Fortunately, it fired right up w/ some fresh gas, so it is good to go. It has probably only burned a couple of tanks of gas, so it is near mint condition. It has a 20" bar w/ a .325 triple hump safety chain(that has some rocked teeth). So I know I'm going to get a couple of fresh chains for it tomorrow. I already have an 026(16" bar, .325) & a 660(25" bar, 3/8"). This saw will see some light firewood & clean-up work. I figure now is the time to change it to change it over to 3/8" if I'm going to. So what do you guys recommend? Should I stay with the .325 or change it over to 3/8"? Any thoughts on what chain/sprocket/bar is the sweet set-up for this saw?