I think the issue with BikeBandit, in my case, is different from simple days-long delayed shipments of stuff. I have been waiting now for SIX MONTHS for parts I ordered. I suspect these parts will NEVER be available. Other vendors don't even show them in the catalog. The problem is BikeBandit just allows people to order stuff with no actual plan for how to deliver them in the event their supplier does not have them in stock. I think there's a decent chance Triumph simply has stopped producing parts for the air-cooled Bonnevilles so they will never, ever be available.
I'm actually now looking for alternatives for the parts I have on order from BB for my Bonneville, gauge gaskets (rubber grommets, essentially) and handlebar riser bolts. I think the riser bolts can be replaced with socket head cap screws, thread doesn't matter because there's a nut on the other side so these ultra fine thread parts are not required. I still have no idea for the gauge gaskets, especially since they are keyed to keep the gauges in the correct orientation.