Doesn't sound right to me Ratbob, I do a lot of k's, lot of them on dirt corrugated roads and haven't had one go yet.
LOL, yep that’d be the perfect cure. I’d love to put a Springer on the Dyna, but seems too difficult.
Yep that would be an extreme measure R/B.
I know yours sounds like it has gone completely so will need replacing but I've had success with a seal mate when I've had seals leak in the past.
Can be bought for about $10 if I remember correctly, easy enough to make your own though.
Pushed up into the seal and rotated to clean any shit out.
Has worked for me.