Very common.
I tried to do the same thing and as you can see, they are different in somewhat subtle ways.
What I finally did was decide that I really REALLY like the original PG in tort and it's still on the MIM bass.
This problem will rear it's head with Affinity clones, Squiers and MIMs when you get parts that fit "ALL FENDERS" from most suppliers.
Try these guys - they do 'traces' for PGs and even though they charge some more, it may be what you want:
http://pickguards.us/pgordinst.htm