driveline vibration inquiry

[N197TR4@cs.com]

Greg picked up on the "RPM Related vibration" description and suggests clutch 
cover out of balance, with the worst condition being a cracked crank...like 
at the 4th journal.

They can go for thousands of miles before letting go..but not a happy thought 
at this juncture.  My timing is not good for pursuing this diagnosis and I 
apologize for that.

Regards,

Joe