I had a wonderfull time installing my Powerforce dampner. I used a small
3 stone hone and twisted it back and forth by hand so as not to damage
the tiny keyway groove. It sucked,but it went on and I have had no issues with it. Compare the keyway groove to an OEM and You will see
what I mean.
Yea, I had two ordered with a local machine shop, after 5 weeks after
the expected arrival time I discovered MSA had them and got it 4 days
after placing my order.
Russell