I love my mutation but I done one problem with it. About two weeks ago, I posted a thread about my x cube ii stopped working. Found out liquid was getting in through the screw holes. Well got it replaced and realized how bad my mutation leaked athe the lower holes for bottom air flow. The rda comes with plugs fire those holes:I highly recommend if you're using a regulated, digital, high end mod, you definitely use these plugs. It prevents you're rda from leaking onto inadvertently into you're mod. I may be late to give this warning, but hopefully it call help someone out there from facing the same issue as me