Cook Pasta according to package directions and drain.
Preheat Oven to 350 degrees
Shred MontAmore Cheese,set aside.
Combine 2 cups milk and 2 cups half and half in a medium pot and bring to a light boil.
Add shredded MontAmore Cheese and Cheddar, whisking continuously.
Add Salt,Pepper, and Garlic Salt.
Continue stirring and bring to a boil.
In a small bowl, combine flour and 1/4 cup milk and mix well.
Remove 1/4 cup of cheese sauce and combine with the flour/milk mixture. Stir well.
Add mixture back to cheese sauce and stir completely.
Add Pasta to cheese sauce and coat.
Pour in 9 x 13 baking dish and sprinkle with Paprika.
Bake for 15-20 minutes.
Remove from oven and let stand, sauce will thicken upon standing.