Stop in for a cup of coffee

Another guy on the old Innovate Forum was Bruce "Shrinker" Robertson.
He machined his own solid fuel carbs from scratch.
The whole thing. Not just a few parts. His own modular design.
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QuickChange by Smartcarby

He only used them for his customers (cars/boats he was tuning or building). From what he posted when asked about buying one, his response was the solid fuel design did not lend itself to bolt on and go. So he wouldnt sell them except to those people whose engines he was working on.