Thanks for the reply.

Yeah, I'd call it a shake.

The engine runs pretty smooth. 

pilot bearing is bronze and i replaced it when it was apart.

The splines in the coupler are tight and there are two bolts in the front of the coupler

 There is just a little play when I put it in gear with the engine off and the clutch disengaged.  when I turn it by hand like that it turns almost a quarter turn back and forth.