some transmitter software
can adjust the transmit power output i believe.
One guy flashed his x-mit software
to highest setting and locked it there.
it was operating at near design limit and he had to install a cooling
not sure if your booster or router x-mit adj's power on the fly running or if its increased input to booster.....but to me the excess heat suggests increased output power... if it was mine i'd start looking in that area. and i'm to lazy to look it up but i'd get tech specs for both booster and router and look to see if its constant output or variable
i'd be looking into increasing heat dissipation if it wasnt a defect causing this