Quote:

Is there a shaft seal on it?


No shaft seal. I would drive out the lower roll pin & remove the plastic collar & add 1/2" ID shims (locally or www.speedwaymotors.com has a kit of em for $5) to reduce the axial play to .005". Other candidates are excessive bushings/shaft radial play but you said it's pretty new, excessive blowby/clogged/wrong PCV


live every 24 hour block of time like it's your last day on earth