im using 3 inch heat tape and each strip is about 33 inches long.. my question is how warm should the strip of heat tape get? seems like its not getting warm enough.. i have it hooked to a zilla 1000 watt temperature controller (thermostat) set to about 94 degrees. the thermostat always stays on and wont go above 90 degrees... does anyone know the problem? is it not suppose to get any hotter? bad soldering job??? anyone???