97 GSX Lost Thrust Whirling noise??

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Guys,

I just had a new Drive shaft, Carbs, and Pump rebuilt. I took it out and she ran OK not exactly full power as she should but close. Then she started to loose some RPM's so i idled it down and the she came back up to speed.

Then suddenly i loose all thrust and i heard a Whirling noise comming from the jetpump i assume... kinda sounded like if i spun the wear ring around fast against the metal casing.

If i Idle it back down i can get her to come back to power, but something this time feels off, not as much power something definitely gave away any ideas would be great as i just had it rebuilt.

So what the heck is slipping here? Impeller on the shaft? Wear Ring bad?

 

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I haven't tried to take apart the pump yet, im on vacation this week and it may take a bit.

I know the oil was correct with the pump, could the splines be bad on the impeller or the driveshaft? as this is brand new.