Super Jet Wear ring and pump

I have just noticed there is a big gap between the impeller and the housing, and my ski feels like its calvitating (or just not hooking up). I think it has been like this for a while, but I have just noticed it when I added a b pipe, ADA head and epic ignition.

I'm going to get a new housing/wear ring and new impeller, but is there anything else I should be checking? Like the alignment or any bearings?

I'm not quite sure why it has worn. It has a Solas SS impeller.

Andrew
 
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