I'm quite stunned- One minor leak, but it ran! The idle goes up and down. I guess that's the inlet valve sticking closed, (idle down) then the float finally pulling it open (idle up). I was afraid to clean the needle valve too much - couldn't tell where the valve stopped & the Viton seal began.

Thanks for the offer.
The carb is a Walbro LMT 116 that goes on a Briggs 19E412 (10 HP), running a 5000W Coleman. The Briggs pn for the kit is 497849 (carb manuf. in Feb 1996). Finding a kit will be a matter of happening on someone who has one in stock. The distributor (Sedco?) is out & backordered on anything generator-related.