Check with Walthers they now own the Life Like line:
http://www.walthers.com/
Or send your questions to Model Railroader magazine:
http://www.trains.com/mrr/
Here's a site for "Traction Models":
http://www.trolleyville.com/trolleyville.shtml
And here's a forum for model trains:
http://www.modelrailroadforums.com/forum/
That help any?
Larry.