Hi!  I'm Victor & I'm new!

I have a Bachnann F9 (I think?) Diesel which is behaving strangely.  I can put the front wheels on the track and the headlight will light up and the motor will run, UNTIL I place the rear wheels on the track.  Then it stops running & the light goes out! When I lift the rear wheels off, it immediately starts running again!

Is there anything I can do to correct this problem?  All solder joints appear to be in place.  Nothing looks broken with the wires. It just does this weird thing!

The box it came in says it has a Limited Lifetime Warranty.  Don't know IF I should send it in, or to where, or if it's something I can correct withcthe help of Forum Folk!  I'd appreciate any advice!  Thanks!  ; D Victor