Almost the same here, but I don't lower the temps. I purposefully lower the ambivent temps in the environment by turning off the heat in that section or by moving the racks to a cooler room. I maintain the 90-92 with Johnsons, and the middle still stays about the same temp..but the cool end is cooler. This gives the female access to a cooler section if she so desires.
I do not risk great changes in body temperature, because it's been suggested that doing so can cause R.I.s. I have successfully bred every snake that I attempted (well one fooled me, I mistook a building for ovulation and pulled the male too soon)
Hope this helped.