Quick Yo Yo maker

I bought a Clover brand Quick Yo-Yo Maker over the weekend. It's so easy to make the little yo-yos that I've become a little obsessed with it. I bought size small. Looking at the options, I wanted to buy a medium but I don't see that size at the Clover website so maybe they don't actually make a medium. I follow the directions in the package but wait to trim the fabric until after doing the stitching. The first few I made had a too large seam allowance and are a little puffy. So, now I trim the excess fabric right down to the edge of the plastic.