I have used both original and regular supports for many years and have had no problems. Although I don't normally use pen slots, except when using a lintel clasp, they don't have this hole. I have always found that the Power Poles have a slight click when mated. It's not like this. In fact, some of the metal tabs hung lower than others, making assembly awkward. I'm not saying their entire line is bad - obviously people like them. But my set was far inferior to Powerwerx and Connector Pros.
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