You actually want all liquids and food drippings to run to one side: the side with the grease trap, that is. So, all you have to do is locate the catch basin on your flat top grill and level the unit accordingly. Be sure your griddle is leveled in a way that allows drippings to trickle toward the drip cup — if the liquids sprint away, then food will be more prone to burning. Certain brands place their grease traps on the front of the grill and have designed the unit to slightly lean that way so you don’t have to worry about finding the proper level.