Approx. 4,000 miles ago I replaced my Sportster XL1200C (@59,000miles) slipping clutch with Barnett's Extra Plate kit. The kit had worked fine originally after install, but the other day the clutch/drivetrain completely went out. The bike will not take off from a dead stop. Can I rule out that this is not the clutch plates and another issue? Could this be the clutch hub assembly and spring plate have gone bad? Hopefully, I can pin-point what the problem is with my clutch/drivetrain from replys.