i have a heater and i noticed a leak from the screw that is underneath the pipe that goes to the heater. this screw is what i have to unscrew when i close for the winter. i did tighten it when i opened it but there is a drip. i put a small pail underneath it last night and this evening the pail is full. when i emptied the pail i also noticed the water was warm to touch. i do not have the heater going yet so i couldn't figure why the water was so warm. then i noticed the pump motor was hot to touch...i have never noticed the motor being hot before, but i never really have ever touched it...is that normal? i shut the pump off and i could hear a hissing. i put my finger underneath this screw and the hissing stopped. can you give me advise about the leak and if that is normal about the pump motor. thanks