Yanmar 2gm shaft whining noise

[theancientmariner]

My Attalia 32 makes a whining noise at a couple of speeds that I am trying to diagnose. The cutlass bearing and support bearing were replaced two years ago, as was the stuffing box. New stuffing this year, and the shaft alignment was also checked, and is spot on. Transmission oil OK. Also, my stuffing box has a grease nipple, so I have shot a small amount of grease into it. Still makes the noise...anybody else with this issue??? Thanks.