Reply by Tyrone

I was actually taking the belts back regardless of this deviation or not. They are too short and I’m maxed out for tension adjustment.

I can’t actually set the pulleys with a straightedge as the pulleys are different and the distance to the first groove from the edge is about an 1/8” more on the drive pulley. I was thinking I could use a torpedo level and level the trunnions to the arbor pulley then shim the motor so the drive pulley is coplanar.
According to this guide here:
http://www.theadvancedteam.com/cases/Seven%20Steps%20to%20Belt%20Maintenance_white%20paper_.pdf
Misalignment should be less than 1/2degree per foot.

-- Tyrone - Canada, BC