A more drastic suggestion to resolve the mother-in-law situation would probably create more problems than it solves, so for now I'd say:
Live w/the cruise problem, and save your own life.
Here's another thought- if yours is like mine, its mounted on the metal firewall bulkhead, and the bulkhead has a noise attenuating blanket glued on the forward (gen set) side that is black & no doubt highly susceptible to accumulating heat. Try insulating the forward side of the bulkhead where the CC/SmartWheel box is. If that doesn't work, unship the box & insulate between the box & wall when re-attaching. You could use foam packing sheet for the insulation. Gotta be only a few degrees causing this, and small insulation shim should fix it.
If that doesn't work, and you are still non-plused, PM me for the afore-mentioned alternative solution methodology.
Baja-tested '08 2-slide 36'
Alpine: The Ultimate DIY'er Project