Hello, during a recent inspection of our 2006 home in Colorado, the buyers inspector took objection to the way our Kohler "jet tub" is bonded. He claims that the bonding wire is connected to the cold water pex line, which from the photo you can see this is not accurate as it is connected to the metal mixing manifold of the faucet. The entire home is pex and there is a blank face GFCI on a wall separate from the tub as well. The solid copper bonding wire, as seen in the photos, runs from the main motor lug, along the floor, and then to the metal mixing manifold and basically ends there. Researching 680.7, and more specifically 680.74 and watching the youtube video discussing it, it seems this bonding is proper and in fact DOES NOT need to be routed to the main panel or even the outlet that is under the tub skirt where the motor plugs in. Obviously the NEC requirements have become more stringent over time, but even with today's code, does the bonding of the tub in our case meet the NEC standards (at least of 2006)? Thanks so much for any help you can give me.