What a wonderful RDC you got there. :) As for me, I have the old Athearn RDCs still working(2xRDC-1s, 1xRDC-3). Thanks to this forum, I've been given the idea of installing fly wheels on them, and they did make a difference. :) I've been dreaming of upgrading to those P1Ks, perhaps 2xRDC-2s and...