I have some British trains from my dad that I would love to get running again.  Is there anyone in the greater Chicago area who does repairs or can recommend someone?.  (I live in Mundelein.)  One engine, a Mainline 4-6-0 Royal Scot has drivers that are out of synch.  I think it's called quartering, but I have no idea how to fix it.

Also, I have a couple of other engines, coaches, and wagon.  Some are Mainline; others are Hornby.  There are 3 different couplers which really don't work together very well.  Is there a way to change the couplers so that all the cars/engines use the same couplers?

thanks.