As Famous Bob says above, don't have any oil in the bearings when you use Plastigage; it'll throw off the readings (and may also make the P-gage flow a bit more than it should due to oil wanting to dissolve it). Use it dry like it is supposed to be done, and don't rotate the parts I also avoid tapping the caps when assembling with P-gage just in case the momentary distortion of the cap might hit the P-gage and crush it.
bigrobsRT, what are you going to use this engine for? I run .001-.0015-.002 on street engines all the time and never have issues. I polish journals up to .0025-.003 on my race engines (which are all 4 bangers BTW). So a lot of this has to do with use and engine particulars.
