just got a new kegerator (downgraded to a 3 corny dorm fridge from a 20 c.f chest freezer... apartment living). the tower came with the shanks and 5ft of hose installed. I need to replace the 5 ft lines with 10 ft lines, but for the life of me cant get the nut inside the tower loose at all. i figure if i can loosen it i could unscrew it the rest with my fingers, but its like these damn things were JB Weld'ed in! any tricks?