I'm thinking it's just far too warm in there to be honest , maybe dangerously so as well .
As you know a thermostat is essential to regulate the heat sources plus a digital thermometer with a wired probe for taking the SURFACE temps under the warm hide ... in my experience none of my Royals / Balls wanted it to be as high as 95F .... worse still it sounds like you're using one of those crappy stick on thermometers which are sadly inaccurate and they only give AMBIENT ( surrounding air ) temps .
I'm guessing the temperature under the warm hide is well over a 100F !!
Also did you mention that you also have an unregulated heat mat under the cool side as well ??
That heat mat maybe unnecessary and even dangerously hot if there's no thermostat regulating the temperature.
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