This was replacement to an older Microderm pro that stopped suctioning. New...

This was replacement to an older Microderm pro that stopped suctioning. New works well, my skin is smoothers again and pores have gone down. I'd love to see my acne scars go down as well. I am having an issue with putting disc in all the way. It stick up out of the cap and now sure if that's how it's supposed be. Disc does not sit down properly.