I have a G-Scale White Pass Steam Engine and cars.  We have set it up on a wall shelf that encircles a 12’x12’ inside room.  We purchased the train set this year and it generally runs well in this set-up.  However, the train requires that I turn the power knob to approximately 65 for the train to begin to run and keep a fairly steady speed.  The train slows down at the far end (furthest away from where the power supply connects to the track) and picks up speed as it gets closer to the power supply feed.

It was suggested to me by a friend that I could attach a second power supply to the track on the other end to provide more even power to the train around the entire track run.  My question is to determine if this is a safe configuration (i.e. two power supplies attached to the tracks and providing power to the train simultaneously)?  Will it improve performance?  Will it negatively effect the train?

I have followed all instructions in setting up the track and train.  I have good, tight, smooth connections between all sections of the track, have used the track clips and I have the track tacked down to hold it tightly together (short nails through the holes in the plastic tie-rods provided in the track sections) as well..  I have the Bachman train maintenance kit (contact oil and grease) and have used approved track cleaning fluid.

Your advice would be appreciated.