I'm returning to stock seats in my late TR4 (CT32756). The stock seat rails and mounting hardware are long gone and I've been sourcing parts from the standard suppliers (Moss, Rimmer Bros, etc.) The one piece that I cannot find is the "seat retaining spring clip" (it's #50 on the Moss seat diagram). Does anyone know where to source one? Or if someone who has one was willing to provide a diagram in Solidworks so I could have a set machined, I would be very grateful. Or even let me borrow one to draft up a diagram myself. Available locally in Salt Lake Valley, UT and south central WI.