Centering axle to PB dropmember rear notches

[Poorkera]

Hi all,
I'm new to this forum and I'm currently re-restoring my 72 SWB, bought the extreme front and rear PB dropmember and I'm just about done with the rear, not sure how center to notches (bridge assembly) the rear end should be, it's almost centered on the driver side but appox 1/4-3/8" off ( toward the aft) on the passenger side. Wondering if any of you have had this misalignment issue?
Thank you