Hello! So I got a 6466W tender from eBay, replaced the brushes, cleaned it very well and got myself a KW transformer. Toot-toot it was working great. Then my track started shorting out, but I was finding the screw from the tender shell was falling out and that seemed to be the cause. I had a 6466T and just swapped shells and the screws stayed in, but the track continued shorting. The engine worked fine without the tender. Add the tender and it would maybe make it around again and would short. it would still whistle when whistle button pressed.
AI had me move the relay arm, but with the shell off I could see where the pickup rollers wire were soldered to the interior coil lug, wires were sticking out. When I unsoldered, it seemed when they rewired, they left old wires in the solder. I rewired and soldered those wires as well as two other old cloth wires (just not the two wires that came out of coils).
It was going around the track a few times, I hit the whistle button, nothing happened, the arms didn’t move and it wasn’t clicking. I moved the relay arms, now it’s shorting as soon as I put it on the track again.
I’m super frustrated and have spent hours on this thing. I don’t understand why it stopped working in the first place. Any ideas? Thank you in advance!

