Thank you! I check multiple spots as well, there are some parts of the enclosure near the edges that are cooler than 78F and it looks like the warmest parts are 87-88F. I focus on the temperatures for the hides since that's where my BP spends most of his time.
One other question I had was where I should be measuring the temperature for the warm spot with the temp gun - should I measure the bedding under the hide, or the outside top of the hide, or the inside ceiling of the hide? The top of the hide on the warm side is showing 87-88F (outside surface and ceiling) but the bedding in the warm hide is only around 85F.
I used to be able to get an 88-90F warm spot with belly heat for my BP, but if I was to get the temperature of the bedding inside the hide to 87F now, I would have to turn the heating higher, which would probably make the cool side temps too high and the outside surface/ceiling of the hide would also be warmer than 90F.
For context, my BP has two of those plastic black rectangular hides (one on the warm side, one on the cool side) and a cave hide in the middle.