I've followed some of the discussions on which DCC system is best/preferred. I'm currently operating DC in N Scale, and wonder whether forum members have any suggestions for preferred DCC systems/non-preferred systems in this scale? I own a Precision Craft EMD 7 that has a chip installed - though it's difficult to ascertain which systems this chip is compatible with. Does anyone know this, or should I contact PCM to find out? Also, I'm useless at taking locas apart (and indeed putting them back together), so do you guys out there know whether there are any folk who'll put in N scale chips without charging an arm and a leg...?!