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[QUOTE="soap, post: 1198604, member: 54357"]
Alright, I see the piston a and b question has been turned into accuracy with calipers and units.  haha  First off thanks to Matego for the piston specs.  Once I saw the difference was on average of thirty thousands I didnt care about the size difference. The wiseco piston is said to be 2.114 in (the exact measurement the a and b piston share) but they dont give tolerances. So Im assuming they dont care too much either.

The caliper I used did read out to 0.0001 in.  But as many people have said, it's not likely to get an accurate number out to that range.  The small difference i did read was less than 0.001 and so I dismissed it as my mistake or slight carbon build up.  You guys can fight over the importance of that one.

I did go against doctor's wishes and went riding today, and everything ran great.  The kickstart felt like it had the same compression (like I could tell the difference after 2 months anyway), and although I didnt use more than 3/4 throttle all day (Im trying to break it in) it did feel to have the same amount of pull.

So final verdict is dont worry about a and b unless you have an A cylinder that has been badly worn.  Then Im sure the POSSIBLE extra 0.0006 inch would come in handy.
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