Quote Originally Posted by chrisb View Post
from what i see on my zzp 300m input shaft is chatter in the seal ring groves. when our parts have chatter they are normally gotten rid of depending on where it is on the part. bottom line im not really impressed with the machining of the parts And would not pass them in the condition that they are being sold.

I've heard this from other before when getting these parts, that they were poorly machined...