Maybe that was RD's way of telling you something about the current state of barnett. Did they outsourse to China or some inferior manufacturer?
I have some 20K miles on my SP1 kit that came with discs, plates and springs.
You know how I ride, I don't baby it!
I've used Mobil 1, Honda HP4S, and Castrol. All full synthetic.
I have had zero issues, and the springs gave me a better feel at the clutch handle than the OEM's they replaced.
Pretty sure I bought them thru Nathan when he was still rep for RD here on the forum. We didn't have any conversation like you described. But that was in 2012.