T47 NDS spacer?

[Nomadmax]

I just installed a Campy Chorus 12 speed crankset (170mm) on my Litespeed Arenberg (T47 BB, Campagnolo UT T47 cups). It replaced a 172.5mm crankset, same make and model. After double and triple checking everything, the NDS crankarm is only clearing the NDS chainstay by one MAYBE two millimeters. I re-installed the 172.5s that had been on the bike and they have nearly double the clearance. Wave washer is in place and I even tried two of them with no change in clearance. With the NDS pedal 3 oclock position, I can push the crankarm until it touches the chainstay.

The question is, are there NDS spacers out there for T47 threaded BBs and is that the proper fix?