Good post Zero but I think you over-simplify the fume problem. If only it were a case of over servicing! I worked for 12 years maintaining 146's and the problems we had with fumes were usually caused by degraded oil seals within the APU and/or to problems keeping the APU bay adequately sealed off from the intake plenum. Having said that, it'll be good to see these a/c back in the air so good luck to them.