Hello. I'm slowly getting used to my new "used" B7810. I really like it. right now I'm driving in my woods to cut firewood. I cut it to stove length then put as much as I can fit in the loader. Drive out of the woods. Then either go to the splitter if it needs it. Then drive right in my hoop house and stack my firewood. There is a few slick spots so I put it in four wheel drive. But can't you also used the differential to get positive traction? I tried steping on the pedal, nothing happens. How hard should you step on that pedal? I read my manual. it didn't help me. Forgive my novice questions. I'm sure it's me. Thanks.