Hey everyone. I'm a bit new to lasers and extremely new to the world of building. I just received all the pieces I ordered in the mail and I'm having some troubles with the heatsink and the laser module. The module is a standard 12x60 and the host says that's what it fits (the heatsink came with the host). However when I put the module into the heatsink which is just a metal ring, it is a pretty loose fit. I was just wondering what I should do as this is my first build and I don't want to mess it up.