Ron:
There are a couple of places here in the states that rent reamers, have you tried them? Not sure if they will ship to Canada however,.
Bob
Here's one that didn't say US only.

4D Reamer Rentals LTD
432 East Idaho St., Suite C420
Kalispell, MT 59901

Phone 406-752-2520
Fax 24/7 406-890-6341