I would say your problem is simple. CSA wiring code requires LARGER 120 romex than USA built units. That means they were attempting to crimp 12 gauge instead of 14 gauge wires to the teeth of the outlets. Since I only work on tens of thousands of USA built units, I rarely ever find what you have found. Yes, I have found inadequate crimped 120 outlets, but it is rare. When you attempt to crimp 12 gauge they MUST use a little more diligence in doing the work. Now for the Simpletons that state "they do not have electricity in their homes", What BS. Amish(Mennonites) are NOT close to the majority in the Assbly plants. I WORKED with them 40 years ago in Middlebury, and I can guarantee they know how to assemble correctly, RV units no matter what part of the production line they are on. These receptacles have been in use since at least 1975 in the RV industry. Doug
