I used to use a place in Toronto call Alpha Instruments. It's been about 10 years since I used their services. I looked them up in the yellow pages and they're still there, phone number is 905-477-2133. I just gave them a quick phone call, and it's the same outfit, but the young lady answering the phone didn't know anything about Smiths. The guy I used to talk to was an old European guy, and he was once Smith Canadian shop. I've always had good luck, but once again, it's been quite a while since I delt with him. John at Motorparts, or Mike at Walridge might have more current info.