Completely different type of system, though. Although I do feel models tend not to model lows deep enough, which also results in models coming in too southwest. Only from svwx experience though.
Apologize if this is stupid, but what's stopping them from just verbatim copying the GFS? AFAIK its public domain and, even if bad practice forecasting wise, would be leaps and bounds better than whatever they're doing right now.
Aside from the fact that a 0.9" difference is literally just run to run noise, you're misusing the models. Euro and GFS aren't built to nowcast day-of events.