Originally Posted by
cxwrench
Is it uneven between the spokes on the NDS or is the NDS lower overall compared to the DS? If it's uneven between the spokes on the NDS take it back or try to fix it yourself.
This is the pertinent question. Implicit is the understanding that tension on the non-drive is usually less than the drive and expected to be that way. As long as the wheel is straight and true. As cxwrench says, if between the spokes on one side, bring it back.