Bob,
Benson Tire, 61 Enterprise Dr, Belleville. Took two tires there this afternoon. It took me longer to persuade them, than it took to balance the wheels. Done while I waited. Next two for tomorrow. 79$ for the two. The worst wheel/tire took 4 ounces to balance.
I believe that Benson Tire is a chain of stores and I suspect that there is one in the Ottawa area.
Peter