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Thanks Autoxcuda for that photo of your Ultra Pro rockers.

Looking at the rocker in your right hand, that looks like a metal-backed sleeve bushing, sintered bronze and PTFE.

Notice the parting line in the bearing.

They look these: http://www.asbbearings.com/steel_backed_bearings.html

And John, you're probably right about those Hughes shafts. Light banana grooves in my shafts is all I probably need to do. It's a hydraulic cam.

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My opinion , bananna groove your shafts and run them , you are worrying about nothing if you have a hyd. cam .

edit ... I see that is what you are going to do