Success! The new pantograph PCB (Rev.B) arrived today and after installing it, the pantographs now work as they should. Fankly, hte most difficult pat of assembly is re-seating the pantographs. I had the darndest time getting that control arm dimple back into place. I struggled with it and finally decided to loosen the control arm pin screws so one was probably no more than one turn to coming out. Only then would those dudes seat properly. By accident, when I removed the pantographs I loosened one of the control arm pins too far and it, the little spring and the pin itself fell out. Fortunately i found everything readily and I learned that spring doesn't fly out...it merely spilled out along with the rod.
I do have a question for the experts here. Should I have bought a second pantograph control board? I'm thinking I should just in case the pantograph PCB in the powered unit fails some time in the future and Lionel runs out of them? Thanks again to all for the good advice.
