I purchased an ATN NVM14 and their universal helmet mount package, that comes with their clone of a base plate, rhino mount and mum j-arm. All the components are plastic so they fit sloppy, and i can't get a line of sight down the monocular unless i do it by hand. Im used to standard issue PVS14s and have never had an issue and I would like to find a practical way to convert to that system if anyone could point me in the right direction