I just had a new tub and surround put into my bathroom. Well when I turn the handle to turn the water to hot the water isn't getting hot at all coming from the tub however the water is getting hot to the sinks and other bathroom. The handle seems like it should turn more but doesn't. Could the handle which turns might not be installed properly of is there something wrong with the hot water line?

Have the installer reset the temperature stop . Some mixer valves are set low, I had to reset mine and I take only warm showers.