Guess i shouldn't have gotten the power supplies from you then since they can't power your own boards =)
I guess you've should read the specs more carefully.
The Mean Well is good for 60W (
http://www.burninmining.com/product/mean-well-gs60a12-p1j/), which is good enough for up to ~372MHz:
[...]
ambient: 25°C, water temperature 26°C
Chip Frequency - Chip surface temp, cgminer board-temp, Core voltage, power consumption, comments
Air cooling:
282 - 45.8, 40.5, 1.2, 46W, stable
340 - 50, 43, 1.2, 56W, stable
372 - 51.5, 45, 1.2, 61W, stable
390 - 52.5, 46, 1.2, 2% hw errors
390 - 53.3, 47.5, 1.25, 70W, stable
409 - 55, 48.5, 1.25, 2% errors
409 - 56.5, 51, 1.28, 77W, stable
434 - 57, 52, 1.28, 82W, 10% hw errors
[...]
So, no reason to complain...