It was a good catch by Kenneth to see it had one piston turned opposite the others. Pretty obvious mistake made by someone. Hopefully you get all the issues with the engine sorted out. That probably wasn’t not causing any problems as long as the connecting rod was oriented right, but it needs to be fixed while you have it apart. Make them all the same, either stock, or reversed.
Having the pistons reverse hung puts less force on the trust wall of the cylinder and piston skirt. It is really not much of a secret speed modification, and most of the time does not do anything. Put all the pistons back stock, or leave them backwards, but get them all the same.
Sounds like the machinist is Knurling the guides. It tightens the guide up. It is not close to as good as bronze guides, but is cheap to do when the guides are a little loose.
Changing to Rhoad’s lifter would mean breaking in another set of lifter on already used cam, which seems unnecessary since you have already run it. You probably wouldn’t like the noise Rhaod’s lifters make anyway. Advance the cam to 109, fix the other engine issues and get it back together.
The cams overlap creating a ghosts noise is very very unlikely.
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