When I connect my vac hose to the skimmer, the pump seams to be starving for water. My hose is about 30' long but I only need about 20'. I feel there is too much restriction for the hose length. If I cut it to 20' will that help to solve the starvation problem? The hose is 11/2" ID. Also can I get a new cuff for the hose end?