Your pump may just be more worn that his. Check the clearance between the outer edge or the impeller and the pump housing. You may need a new wear ring if you have too much clearance
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-1990 X-2 - the weird one
-1987 JS550 - bone stock and staying that way for now
-1984 JS550 - restored, 440 pump, Skat Trak, primer, thumb throttle
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