Thermo Regulator head up gas instead of cooling down

I regularly experience the problem of the output gas of a thermo regulator not getting cooled properly in my game. I have to reload or deconstruct and rebuild the regulator to address the issue. In the following save, I have approximately 11 thermo regulator cooled hydrogen radiators. The 9 dedicated to cooling natural gas and petroleum generators. If the save runs long enough at least 1 or 2  of the regulators will start experience problems, often within the first 20 minutes of loading. They can be picked up visually by checking the gas in the radiator pipes above the generators. If it is between -7c or higher then it is a problem regulator. (If the pipe contains ~70c hydrogen then that's just my delivery circuit and is not a radiator.)

AG 068.sav