Does anyone use on their 50amp service a locking 90 degree female to locking straight male adapter plug? I am trying to find a short adapter cord I can use to help with strain relief of the heavy straight 50amp cord pulling on the outlet on the side of the trailer. On my last FW the plug started pulling out of the side of the wall from the weight and strain, i'd like to find a 90 degree adapter to minimize that strain and if possible find locking on both ends to help keep it drier. If you have found them, where? Who makes it? Model number? Thanks in advance.