I know carb rebuilds are iffy. My original leaked. I rebuilt it and it leaks a little. Decided to buy a rebuild from Rock Auto. I could see fuel pouring from the bowl vent. Shut off car. Could hear fuel filling carb throat and verified with flashlight. Won’t buy another. Put old carb back on and the “new” one is going back. Old leaks a little when shut off but no waterfall down the manifold like the Uremco rebuild.
FWIW I use only non-ethanol mid grade.
