I can touch the hot spot no problem. I put a digital probe on the rock and it keeps showing a 135 surface temp but I have to wonder how accurate it is. Definitely warm to the touch but not burning hot.

112 is a lot lower than I've read is the norm. I'm using savannahmonitor.org as my basis as well as other threads on savs.

Diet wise he is definitely getting mostly insects (with maybe the occasional lean turkey meat, egg, etc). And yes, calcium is being used on his food items.