Can you do ebay? Should be several that will ship to Canada. If not, I bought a cyl kit and that very same clamp from these guys a couple weeks ago, and I believe they will do Canada as well.
https://www.sawagain.com/husqvarna-..._UULgKB70AXQrFPrX2vWfcsyffugmY6RoCrxAQAvD_BwE
https://www.sawagain.com/husqvarna-..._UULgKB70AXQrFPrX2vWfcsyffugmY6RoCrxAQAvD_BwE