I have to admit that I dont keep meat cool
This is a common mistake that is easily fixed.
When meat is cut, a small amount of water is released. If the meat is nearly frozen, the cutting is clean and the water released is minimized. If the meat is warmer, the action of the auger and blades will crush the meat and it will come out of the grinder as a paste. It may not look too bad, but the water has been squeezed out of the meat and it will cook out dry and mealy.
Meat that is cut while very cold will have just enough water and salt to do another important thing; there is a protein in meat called myosin that is extracted from the meat that will bind water and "glue" the meat and fat together. You will see this referred to as the primary bind. If there is too much water however, the myosin is overwhelmed and is not able to bind the sausage together. It may look mixed, but when cooked, the lack of structure will leave it dry and mealy.
To fix, place the cut meat and fat in a freezer until almost frozen. The meat will feel firm and dry to the touch. You can even put the parts of the grinder in the freezer as well. Set into a bowl of ice the bowl you are grinding the meat to. Mix quickly and thoroughly the ground meat, fat and spices while cold until a sticky mass forms. It will look and smell like sausage at this point.