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Hi, have just replaced the bearings on the jet unit, and for the short shaft on my '96 waveblaster, but after testing it the short shaft is getting really hot (to touch anyway won't sizzle water). Tried removing the jet unit and re-aligning the motor -> coupling, and testing on the trailer. After a short time (less than 5 mins) is hot. The motor and coupling aren't hot so not transfering heat from the engine. Any ideas what could be causing it to get hot?

Thanks
 
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