I am wondering what's causing these burn (not sure that's the correct term) marks on all blades of both my RH and LH props. All the marks seem to be in the same location on each blade. There is pitting as well as discoloration. One of the blades on thr RH prop does have a nick on the leading edge near the marks. That blade has the double burn marks. Props are Bravo One 24p LH and RH. 35 Cigarette Cafe Racer, 500EFI, Bravo One XR.

Is this a characteristic of these props? I have a pair of 26p that do not have the marks, but I don't run those as often as the 24s. Previous boat also had 24p Bravo One props and after 9 years did not show signs of this happening