anyone had success running these on 500mhz full time??? and how 
It would help if you provided more details. Like: do your sticks not run on 500MHz? What speeds do they reach? What is your setup? Which hub, power supply, cooling solution and voltage do you run? Did you play with voltage at all? What are your cgminer settings?10 Compac F, Gekko science hub, 4 per hub, ras pi 4 , currntly running 460Mhz, individually cooled and an extra fan behind them cooling. cg miner setting ?