Rich at cruise

Smaller idle feed restrictors...

I had a spreadsheet to help figure some of this stuff out. Check sizing of IFR in your metering block. If they are .035 or larger, find a piece of .018-.020 wire, small bend and put it in the restrictor. See if the cruise leans out.

I've "fixed" a ton of 950 hp style carbs doing this, especially the ones with fixed IFR's.