I am curious to know if anyone has automatically had bigger expansion inside the Bathmate when going to a bigger model. I have the x40 and I think my expansion in girth is blocking me from going past 6.5" mark while pumping. I come out with gaitor bite and was wondering if I were to goto a bigger model I could pass 6.5" first time using it. I am looking at the x40 as the next step up.