Thank for the feedback. Paul is a great teacher with some great ideas. I’m also totally on board with what everyone is saying. I guess for me personally, I wonder if my mpc diameter is quite right for allowing my lips to oscillate in the m2m way. It feels like my mpc kind of pushes some of my bottom lip tissue over my bottom teeth which causes excess resistance. Im definitely not pinching.I wonder if a slightly wider mpc would stop that happening or if it’s more to do with shape etc.