Review on NANPU 1/2" NPT Air Drying System - 5 Micron Particulate Filter, 0.01 Micron Coalescing Filter, Air Pressure Regulator Combo - Semi-Auto Drain, Poly Bowl W/Metal Gauge by Ron Damndjperiod

Now how hard should this be to install? A 'mental giant' like me should be able to do so with out a hitch.right?All went well until I had to adjust the regulator. It would not adjust. I could not turn the regulator knob at all. It was completely lose.I actually broke a piece of the knob off trying to turn it. It still works.I finally disconnected it from the compressor. remove the 'cap' (knob cover) and took a wrench to the metal regulator knob under the cap. It would not turn without it. After an effort it came lose. Reconnected everything and adjusted the regulator.Very poor quality control. You would think someone would have at least turn the knob to ensure it worked.I should return it but it is now working and it is unlikely that I will have to re-adjust the regulator again.What happen to pride in workmanship?Sad.