BBVersCumSlut

Hello Everyone! I recently discovered and joined this board, and this is my first post. For at least 15 years I've occasionally engaged in stuffing my ass, but recently have started stretching my hole in a more serious fashion. I just bought an Ass Blaster vacuum device from Monster Tube, which is on its way, and have searched this forum for guidance on how best to use it. There are several topic threads that refer to it, and many photos, but the only thing I've found about its use is to be sure to place the inner cylinder within the asshole so that it sucks just the rectum (to develop a rosebud). And, the outer cylinder is responsible for pumping the asslips. But, the photos I've seen typically show the inner cylinder being vacuumed, but no hose attached to the outer cylinder. What I'd specifically like to know is: (1) whether I should use different vacuum rates on the inner versus outer cylinders, or should they be equal, (2) does it matter which cylinder gets the vacuum applied first, and, (3) as with penis pumping, should the vacuum be varied/cycled over time, and if so, for which cylinder, or both? I'd be grateful for any guidance and suggestions, or for any other advice on a pertinent factor that I haven't considered.