I have a 1988 Mr. Spa. Hi limit switch for heater doesn't work anymore. Number is C1-22 RX120 032587 275-2898-00 Eaton/Mears. Has long red button on it and about a 6 inch long copper wire with 1/4" or 5/16" bulb (can't tell). Max 121 degree. All of this is written on the stamp on side of limiter. Can't find it anywhere.