Do you have a way to measure the temps in the cage? If not I recommend you get a temp gun, they run about $25, so not too bad. Worse case get a digital thermometer, I got one with a probe for "outside" I put under the basking spot light, and put the readout part (the "indoor" sensor) on the cool end of the tank.
Ceramic heat emitters (CHEs) are good for ambient temperature, but definitely not basking spots. During the day I use a 150w ceramic heat emitter, a 150 watt basking spot light, and a fluorescent UVB light. At night the CHE is left on just to keep the tank temp at an acceptable level, but definitley not hot enough, or bright enough, for day time. (as a note I am heating a really, really big cage, most people do not need to use those wattages).
What is the light setup you are trying to use? Cage size, wattages, when lights turn on and off, etc. These bits of info will really help us help you.
Also what type of Uro is it? Since some of the subspecies have slightly variant temp preferences.
If you have not found it already there is another great forum that has a ton of phenomenal info on cage building, in fact they recently helped me with a cage I built for my Uro.
This forum is great at helping people get their set ups correct, as well as answering general Uro questions. We love to see pictures and they really make it easier to understand set-ups, and Uro conditions.
I look forward to hearing more about your Uro and setup! What is its name?
Elizabeth

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1.0 Mali Uro Archimedes
0.0.1 Egyptian Uro Zuberi Mosca Khu (Mosca)
0.0 Fish
0.1 Sulcata Minnie
1.1 Iguanas Flik and Loki
0.1 Newfoundland Jasmine
0.1 Feline Winter
Indiana & Wisconsin