I was on the water yesterday and when first started up there was no water coming out of the tell tale. It was running for maybe a minute before shutting it down. I restarted and the water came spurting out fine. But the left water jacket started getting very hot but the right side seemed to stay cool to the touch(the tell tale I believe is connected to the right jacket so I believe the tell tale is only telling you the water is making it into the right jacket, is this correct?) I took it home and removed the left jacket, the head, and the thermostat to check for blockages and to see if the thermostat was frozen shut, it is very hard to move the thermostat but I believe the thermostat is suppose to be this stiff. I didn't remove the right jacket because it requires removing the whole powerhead but I will if I have to. I replaced the jacket and head and ran the motor without the thermostat for a few seconds to see if the water was making it through the block to the head but no water came out and the was no flow from the tell tale. Would I be right in thinking this could only be a blockage in the water in tube or in the right jacket or could the impeller be shot?