Ok, at the beginning of last year I had installed a new lower unit. This lower unit has water inlets at the nose and on the side. The original lower unit only had water inlets on the side.
I also purchased a new SS prop (same pitch/model prop as before) and ran it all year (which wasn't a lot due to the Covid debacle).

Getting the boat ready for this upcoming season, I notice the prop had pitting on the edges and very slight burning on the back of all 4 blades.

Since the only change was the additional lower unit water intakes, is that enough to affect the prop? Thoughts?