Drive shaft slip joint movement

[Mike92STX]

I asked at a place that rebuilds drive shafts, and their price was more than a new one from NAPA because I work at NAPA, so I get a discount. After I heard the prices, I mentioned it is a aluminum drive shaft and he said they can't weld the ends on old aluminum because it deuterates with age. Well SS check is already gone for this month so I will have to wait until next month.