I was trying to replace my thermostat but when I got it in the housing it would not stay put. I have the correct thermostat and gasket. I tried to carefully slide the housing in place but every time we bolted the housing down, it would leak. Is the thermostat supposed to clamp down or is it just supposed to ride the housing? I used some sticky gasket spray to try to get it to stay put and even used some liquid gasket stuff all to no avail. Anyone else have this problem? I must have removed and reattached the thermostat and housing 5 times and it keeps leaking!!!! Please respond, I need to fix this in class today!!!!