I have read where when making and stuffing sausage some people grind twice. I have tried this and cannot get the first ground meat to go through the grinder again. Could it be the size of the plate? I used a 3/16 plate for the first grind and then tried a 1/8 plate for the second grind. I had problems with the first grind feeding and grinding. Do I need to get a bigger plate for the first grind? Could it be my grinder?