It has a little wobble. I'm not sure if your supposed to tighten the screws but it didn't say so in the instructions. My mod Armory arms for my 14s won't snap in and the oss shoes are unavailable and stupid expensive when they are. They're heavy for what they are. A d14 bridge with the socket and screw removed from one side weighs the same.
The d14 doesn't have the side to side adjust though which might result in your thermal screen being a little canted. Doesn't bother me but some people complained about it.