Numb feet is typically from overtightening the liner. Usually people that are overtightening the liner are compensating for a poor fit. Your boot doesnt naturally hold your heel down enough so you crank down the liner to make it.
Get fitted, or refitted.
Go ahead, drink that kool-aid.
FS: Forum Sauce 142 $200 plus shipping
FS: Flux SE30 $75 plus shipping