Hi, please can you advise I have a dryer that only blows cold air. I have removed both the thermostats and the air blows hot. I am trying to get hold of a thermostat with a white spot (92c) and one with a yellow spot (160c) so far with no luck. Can I use any other thermostats with lower temp settings? Also am I correct in thinking that the Yellow spot should only open if the white spot is faulty and remains in the closed position? Regards. Brian