Mark - I feel your pain. I've had my own struggles with heavy power cords that don't want to stay plugged in. I've used 4 different fancy outlets. IME...
-PS Audio: Death Grip
-Shunyata: Loose Grip
-Maestro: Moderate Grip
-Synergistic Research: Death Grip
Of these outlets, the Maestro sounded the best in my system, in spite of the fact that it doesn't have the strongest grip. So I resorted to extreme measures, which you can see here and here.
I removed the outlet cover and used heavy duty zip ties (white) to secure the Nema (male) ends of the power cords to each of the outlet receptacles. The circumferences were the same, so I got lucky there. Then I used an L bracket with light duty zip ties (black) to provide more cable relief.
I don't even want to know how many codes I'm violating.
Bryon
-PS Audio: Death Grip
-Shunyata: Loose Grip
-Maestro: Moderate Grip
-Synergistic Research: Death Grip
Of these outlets, the Maestro sounded the best in my system, in spite of the fact that it doesn't have the strongest grip. So I resorted to extreme measures, which you can see here and here.
I removed the outlet cover and used heavy duty zip ties (white) to secure the Nema (male) ends of the power cords to each of the outlet receptacles. The circumferences were the same, so I got lucky there. Then I used an L bracket with light duty zip ties (black) to provide more cable relief.
I don't even want to know how many codes I'm violating.
Bryon