AMC 360 ticking/knock from the distributor

[Formula 40PC]

I just installed an DUI HEI distributor in my 76 CJ7 with an AMC 360, I transfered the old dizzy gear to the new HEI. Engine starts and runs great, only problem is there is a ticking/knocking coming from the distributor. I have used a scope to listen and definitely louder as you go down the shaft and distributor bolt, also loud on the water pump and surrounding area of the distributor mounting hole.
I just pulled the dizzy to check things out and the gear looks good, no different then when it was reinstalled over a month ago. I have about 1/16" up and down play in the dizzy shaft. Should that be less? Should I shim this to reduce the movement. The dizzy gear prior to and now looks like the cam gear is running a little high on it, you can tell the wear pattern is off center by a 1/16"+. Should I shim the dizzy up a tad?

My oil pressure is 60-70psi.

Any suggestions?
Thanks

 

[Hedgehog]

Shimming wouldn't hurt anything. Have you pulled the cap? How does that look? Does the bottom of the Distributor look hammered like the shaft is bumping.

I'd try calling DUI to see if they have any input on why their Distributor would be knocking. They are the premium dollar GM drop in HEI manufacturer.

 

[gert]

thats definitely different, my old Mopar service manuals talked about measuring that up down free play and shimming it. that would help ensure that you are not hammering your rotor button into the cap.