You shouldn't use tape in your snakes enclosure. Snakes have a knack for getting stuck on it. To secure wires, use a cable clamp instead. The probe I'd suspend 2-3" under the rhp, as illustrated in the picture below. That's a VE RHP, but I don't see why that placement wouldn't work for a Pro Products one.
How long have you been running your heat panels? I ask because they can take a while to raise the temps in your enclosure. That may be why they're running so hot. I wouldn't expect their surface temps to drop much, but once they've gotten your enclosure nice and toasty, they may not need to run so hard.