I found the fixture and setup the mill this morning
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The 4 tapered cylinders straighten right out. I moved the last on the rear bank and was ecstatic that after like 5 minutes each the pistons dropped in and I started the other 6 while these cooled.....then I kind of realized that the machine shop had played with the other 2 and not in the block the cylinder flexes easily....so yeah, it was 30-40 minutes each before there was any need to even try measuring. Right now 7 are an honest 2.5 clearance and the other 5 are maybe 1-2.
On the mill held by the flange the spigot heats up fast, and also flexes a lot, which makes it expand and not hone nearly as quickly as the flange end so there is a chase the taper game where I kind of guess how much extra time to spend on the spigot then after a couple minutes the WD-40 is smoking and its time to move to the next. I'm getting there but this is why I really wanted to pay the shop to do it....and my should aches now after running the quill all day.I'm guessing 6-8 more hours to get them all finish at 3.5.