AcraPlant V-Shot Liquid Fertilizer Attachment availability - JD pre-1984 MaxEmerge planter

I'm looking for 6 AcraPlant V-Shot liquid fertilizer attachments for a pre-1984 MaxEmerge planter.

I've visited many fertilizer equipment supplier websites, and all are sold out for the planting season. Anybody know of a source of, or have 6 new V-Shots, or some in good used condition? I have investigated the Totally Tubular System but like the design of the V-Shot system. Anyone have experience with Totally Tubular? Thanks for any information!

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