g scale open trolley wheels

[Larry200]

How can I straighten the wheels on an open trolley? One wheel set has one of the wheels out of alignment enough to cause the trolley wag back and forth.

[the Bach-man]

Dear Larry,
Contact service for a new motor block.
Have fun!
the Bach-man

[Larry200]

I tried pulling and working on the wheels and without too much effort have gotten them reasonably straight. What type of bulb is used in the headlamp on his trolley? Mine is burned out and I'd like to replace it. Any tips on replacing the bulb would be helpful.
Thanks