Posted this before, but I didn't get help, so I'll try again with video this time.
A little video: Please note that the light flicker in the engines are the engines shorting out. These are stock Bachmann locomotives from the DCC line, and not one car on the train is derailed, nor is the engine I pick up off the track and put back on. The train is on a hill, the single GP is not strong enough to lift the train out of the bowlbut you can see its headlight is solid through the controller's cable, and as soon as I put the other engine back on, they run fine together. They were consisted on a 400 and then dumped so I could run them on my UT4. It doesn't matter which engine I pull off, and sometimes putting one of them back odoesn't fix it. They onyl do it in that section of the layout, so I'm inclined to think there's something they don't like about the way its blocked, but those two are the only engines that short like that through there. Different engines, different consists, different trains don't give anyone the same problem. It's just those two.
A little video: Please note that the light flicker in the engines are the engines shorting out. These are stock Bachmann locomotives from the DCC line, and not one car on the train is derailed, nor is the engine I pick up off the track and put back on. The train is on a hill, the single GP is not strong enough to lift the train out of the bowlbut you can see its headlight is solid through the controller's cable, and as soon as I put the other engine back on, they run fine together. They were consisted on a 400 and then dumped so I could run them on my UT4. It doesn't matter which engine I pull off, and sometimes putting one of them back odoesn't fix it. They onyl do it in that section of the layout, so I'm inclined to think there's something they don't like about the way its blocked, but those two are the only engines that short like that through there. Different engines, different consists, different trains don't give anyone the same problem. It's just those two.