Piston pin tightness.

[muh'stang]

Should the piston wobble freely on the rod (if I hold the rod parallel to the ground, the piston will flop down)....or should they be snug on there so that the piston will stay in place and not move in any direction I move the rod (but still able to move the piston by hand) ? I have some of each

 

[TurboDoctor]

The piston should rotate freely on the wrist pin. as long as you dont have any slop your good.

 

[muh'stang]

there is no slop on either....but some move freely at will, and some i can move freely and easily by hand