I feel the same way as James on that issue.

There are NO heaters or "basking" lamps on ANY of my garter enclosures.

While the females are preggers, I use a heat rock turned down low so it only heats to like 85-90(F) (baby bottle warm)

The pregnant snakes seem to like sitting on it while the sprogs develop inside.

Going to get me one of those IR temp guns from pro-exotics, then I can be really certain...

I like the rock to feel lukewarm, not hot, nor uncomfortable to rest my hand on for any length of time.

Back to your statement, that is too warm.