Hello I recently Purchased a Canon 5D Mark II from a Canadian company called "Simmons Camera". I did this because the US dollar is stronger than the Canadian dollar, and I thought I could save quite a bit of money. I knew I would be giving up my Canon USA warranty but I took the risk after seeing the price difference. Well, I got the camera in three days, since they offer a very inexpensive Express mail service to the USA. Everything was going swell for the first few weeks and I patted myself on the back for having discovered this great pricing loop-hole. Unfortunately, the party has come to an end. The "main dial" on the camera now stops working intermittently at the worst possible moments. Has anyone else experienced this problem? I have attached a photo of the mail dial.