I have a two-year-old 14″ Delta band saw and after reading Dukinske’s book, realized that the wheels were not coplanar. There was a 3/8″ offset! After some time of fretting and observation, I noticed a 1/32″ gap on one side of the riser block. Sure enough, one of the registration pegs was too long. After filing it down, the wheel misalignment was reduced to 3/16″ which can be corrected with a washer.  Thought this might be helpful to someone out there.