I have a B2650 with a front mount snowblower. If the snow is wet the blower jams up and I have to manually clear it. What speed and engine revs should I be using?
Welcome to the world of snow blower ownership. Clearing out packed snow from the blower isn't much fun but almost everyone will experience that chore at some point. It's possible that the blower will plug up even if you increase the rpm and go slowly and use pam or some other spray du jour.
Snow blowers aren't always the best way to move snow as you've already discovered. Many of us have a two-pronged approach to snow removal such as a blower and blade, and perhaps others go even further. I think it's important to not expect perfection. I'm trying to learn that in the hope that it leads to less frustration in life.