Lotta diff. between .018 and .0018 !! Almost sounds like the machine work was done w/ # 3 on backwards.
Like stated above, do u have a full fillet crank, w/ narrow bearings ?
Thanks for catching what I obvously missed.
.018 is out of spec, it'll run... but i believe it's .0015-.010
Maybe the cap was flipped, the bearing locators should be on the same side, check for that.