Dull and sheath comes out with knife when drawn - Benchmade Mini SOCP Fixed Blade Knife

I had considered buying the same knife on Amazon much more cheaply as a knockoff. But I wanted American made quality. I got a piece of garbage. Genuine Benchmade with the edges sharpened sufficiently for no more than hard butter. The point was pointy I'll give them that. Every time I try to draw it as intended and designed the sheath came out with the knife. I tried several different types of pants and shorts with different thicknesses of cloth and was disappointed with this attaching method completely.