Design flaw - Wilson Combat Adjustable Lo-Profile Gas Block

Purchased for an over gassed 308 AR because there were plenty of good reviews. When I installed it and removed the set screw, then set the adjustment screw to the off setting the rifle not only cycled the bolt fully, it was actually still just as over gassed as before I even installed the adjustable gas block. There was no discernible difference between the gun’s performance even between the highest and lowest settings. Then I took a deeper look and realized that the design of the flow restriction is fundamentally flawed - even on the most restricted setting, the flow restictor only occluded the gas port about 50%, which still leaves a gaping hole for gas flow. I looked around on some forums and there were several other preople with the exact same complaint. Fortunately Optics Planet is taking it back as a return without any hassle.