donie you must have one hell of an eye !!! you talk about running the hone one way flip the cylinder hone it the other way and you we get very close to .0002" .
you forgot to tell every one they well need mic's so that they know that they are with in the .002 - .00025 and how to measure the piston and let alone the cylinder, and that different piston makers and types of piston will have different clearance . And for the sunnen sells pitch there are other brands out there that are made the same way so if you want i can go out the shop and take some pic's of my boring bar and hones , and some stones that are no good do to uneven wear.
Here is a scan from Wiseco that tells you how to measure the piston Capture.jpg and here is a link to a PDF of the sheet
Used sunnen hones are around 200.00 and up if in good shape
1 micrometer to mic the piston is around 100.00
cylinder Bore micrometer made in china 100.00 and one that i would trust will cost you around 300.00 -up
PS i have seen many factor trained guys that have know i deal of what they are doing.