Gauges freaking out?

So i have 6 prosport gauges in my 1991 stealth. They do great for a lot of the time, then out of nowhere start to freak out. I thought it might be a bad power source so i wired them strait to the batt. With a 10amp fuse for the constant power it fixed it for a little while, then started up again. So i thought i would re-do the ground and switch power. After doing that, again... it foxed it for a few minutes then started again... i’m about to look into the wires i soldered for the daisy chain but its not that does anyone know where i should look? Or know some gauges that wont break the bank for me to replace these with? Gauges are prosport evo’s


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