wear ring cavitation guoge?

[qbzonk]

I pulled off the pump to inspect it after the ski felt like she was cavitating. I noticed this cavitation guoge at the 7 o'clock mark on the inside of the wear ring. The wear ring is new and has only 10-15 hours on it (no salt water).

I checked the ring to impellar clearance and it is 0.20mm, well within spec according to the manual (0.6mm max).

Is this ring toast or will it be OK or should I fill it with something?

Sorry for no pic, but I came back to edit the post and I get the message I don't have permission?????????

[qbzonk]

Here are the pics:

[qbzonk]

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