Does the request taxi in new ATC work at all airports. I can file a flight plan, but when I get to the request taxi I get no response at some airports, kphx most recently. I have tried it from the gate, ramp and a runway. It does work at ksfo and klgb. I know some plugins like follow me car work only at certain airports, which neither ksfo or klgb work with that plugin. I am flying the Canadair CRJ-200.