[TR] car dollies

[Gary Nafziger]

List
I've never owned a dollie but wanted to mention that steel wheels on
dollies especially could be problematic if the floor isn't perfectly clean.. 
I have a rolling seat I often use to sit and work on body work which has steel
rolling castor like wheels.  I've often flipped right off the seat when the
wheels hit small objects on the floor.  these can be simply small snippets of
tin which are almost invisible.  I find i need to occasionally sweep the floor
just to make rolling around safer.

This could be the same effect happening
with car dollies......just a thought.

gary n.