A better way to go may be by using the mechanism upgrade available from Bowser. I'm sure it will give more pull than the stock Bachmann drive that came with this engine. Here's the link:
http://www.bowser-trains.com/hoemrrs/mechanisms/3_201/3_201.htm
Roger
http://www.bowser-trains.com/hoemrrs/mechanisms/3_201/3_201.htm
Roger