I have talked with Summit same story there 2 weeks. I have tried getting a hold of Todd at Comp wedge he must be busy as heck, he is a great guy that is where I bought my K1 crank. I haven't tried Chenowith, truthfully I forgot about them.
I have tried Marsh, Mazzolini, Shannons and several others listed as distributors on Harland sharps web site. All the people I have talked to have been very nice and tried to help but just no availability.