> Does anyone know which side normally had the strong and which
> the weak one?  (Assuming the factory was consistent)
>   One of mine has stopped doing its job and I need to figure
> out which one it is.  Can I tell by the part number?

The right side is the strong one. Most people just put that one on both
sides. It's this one:

http://busdepot.com/details.jsp?partnumber=251829332

- Ron Salmon
  The Bus Depot, Inc.
  www.busdepot.com