Are you thinking the shaft was somehow damaged when the diff was installed? My shop has installed dozens of these, so I'd be surprised if that's the case for me, but I guess it's possible. Perhaps it's been there all along but had been damped by the standard subframe bushes?
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2019 VW Golf GTI Performance | H&R rear ARB
Previously 2007 E92 335i SE auto | Quaife LSD | Birds B3 ARBs | Evolve Stage 1
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