I have the 750 on my truck and had to jet it for an altitude of about 4700 ft. The carb comes jetted at sea level from the factory. I took it to a shop in my home town that still works on older carburated vehicles and let them run it on a dyno and fine tune it. It ran me $180.00 to get this done but it was well worth it. I see you live in Alberta dont know the elevation there but I am pretty sure jrtting it would help..