Thermostat and temperature of tubs

So I have a rack and my hydrofarm thermostat is at 93. Two days ago the thermostat was set at 92 and the temperatures of the tubs were 90-91 constantly. Later on the temperature started decreasing and so now I put the thermostat to 93. But still fluctuates. Now one tub says 88-89 while the other one says 87-89. Should I raise the thermostat temperature to 94 or 95 or just let it be?

I'd let it be since temps between 88-92 are acceptable.

alright oh and is it normal for a ball python to be in the shedding process right after it was shipped? It's been a week now, still in quarantine and when I looked at him he had loose skin. And when I looked at his card it has been little over a month since he has shed.

Of course, they can shed anytime they are growing, having been shipped or not. If he was eating well before he was shipped then shedding now a month later doesn't sound abnormal to me. I've had two snakes that shed right after being shipped to me.