Hello, I'm in Ottawa too.
Are the bodies just basic Nikon F bodies? Pretty easy to do, and there are two repair shops in Ottawa - Camera Trading company has a tech, and there is Canadian Camera Repair at 250 Albert, downtown at Bank.

Nikon lenses are probably pretty straight-forward too, to clean up. Only thing is that the lens mount screws are glued-in and often damaged by someone who doesn't use the proper care to loosen them. I understand that heat is needed to melt the glue.

I wonder if Kindermann in Toronto would do them; their expertise is Leica.

I did a quick google and came up with some shops in Toronto too, e.g. Toronto Camera Services, Kominek, even Vistek and Henry's.

Good luck