Model Trains Bachmann

How do I re-assemble my Bachmann Model Train, Thomas?
One day, my little brother was courious, and took apart my Bachmann Thomas Model. I have tried to put it back together, but there are these small bronze/gold slivers that I think conduct electricity, and I don’t know where they go. I don’t want to send it in again, paying $15.00. How should I put my model back together?
Contact Bachmann and see if they will send you the plans. If you take the time to explain the problem they ought to help you out. You could also see if there’s a model railroad club nearby that would give you some technical pointers.