I have a trick to prevent my pasta from sticking together. Spray the pot with non-stick spray before filling with water. Or if you don't have any non-stick spray in the pantry, use a paper towel and wipe down the sides of the pot before filling with oil, this will prevent boil overs as well.
And now, for my special trick... I buy small squirt bottles at the dollar stores and fill them with oil. I label them, "Canola"
"Vegetable", "Extra Virgin Olive Oil", " etc. You'd be amazed how well this works!