Well I installed the $100 (ouch) gasket kit from Deere. BTW the package weighed about an ounce or two. So far so good. It started up good, did not seem to leak, flood or run rich. Couldn't figure out were the smallest two gaskets went. I'll likely have to adjust it tomorrow.
The carburetor replacement from Deere was about $275 last year iirc. I checked for after market but didn't find any thing that remotely matched. All were single carbs, this is a dual.