My Gen 3 G26 mag button's rear edge sits flush with the hole. This makes me have to push the front edge--it's pretty hard to do. My Gen 3 G17 button rear edge protrudes just a hair making it far easier to push. The sharp edges and corners don't help--feels like I'm pressing on a Lego. Do any of yours sit flush? Is this a common issue? How to remedy? Thanks!