I’ve gotten a bit of a donut from time to time, and also I almost always get the little red dots. I take a day off after a donut. I don’t worry too much about the red dots anymore. I pay attention more to “feel” in the tube. A little stretching feeling is OK, but I back off if it’s actually causing me discomfort. And I’m not sure what you mean full vacuum. Once I’m pumped up in the tube, when I reach my time to repump up, I will get one good pump that produces quite a bit of water exiting the pump. Then a second, which produces less water, and finally a third, that will just spit out a dribble, if anything. I can’t imagine pumping up more than that, I would just be mashing the BM into my pelvic bones. So, I’m guessing you’re at a super high vacuum if you do 7 or 8 little pumps. I guess what I’m saying is I go with as high a vacuum as I can, without discomfort. When you can feel the expansion, that’s good. But if it’s uncomfortable, just back off a hair. Remember, this is a marathon, not a sprint.