I am too in Manitoba and I ordered several planes from Nitroplanes and if you select UPS to Canada, they will ship your planes with USPS. They stop using UPS to ship in Canada a while ago probably from getting too much complaints from customer being ripped off by UPS. UPS is doing something equivalent to what organized crime do as they keep your goods until you pay them astronomical fees for a service done for free by any other delivery service including USPS and Canada Post. Since I discovered that, I stopped doing business with sellers who use UPS. The only downside to this is that shipping takes a little longer with USPS and you are limited to smaller package. Should be no problem for your Cub's.

Alain