I have a very old 12" Homelite I've owned since new (about 30 yrs). Recently the basement got flooded while I was away and the saw was partially submerged for three days. It sat about ten days before I got around to tending to it. I've gotten it running and it starts and runs as well as it ever did but the clutch wants to snatch and grab along with a horrible screeching noise at random times. It's only improved slightly with repeated use so I doubt it will cure itself. Can the clutch be removed and disassembled? If so, how?