I got a used CV driveshaft to shorten for the Onan engine swap. The driveshaft came directly from the seller. It moved well ( no rough spots), both the boots and the fan were in good shape. I opened it up since the buyer wants new balls and O rings and was amazed at the grease. It acted like glue. The balls are stuck in the splined driveshaft hub. 
Time for the brake cleaner

Time for the brake cleaner
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