OIL LEAKS FROM OIL RETURN TUBE. NO NEED TO REMOVE THE HEAT EXCHANGER. THE TUBE CAN BE SHORTEN OR EXTEND. JUST PUT A HOSE CLAMP ON THE EACH END, THEN USE TWO PRY BAR TO PUSH IT SHORTER TO GET IT OUT, PLEASE REMEMBER TO TAKE OUT THE SNAP RING IN THE MIDDEL FIRST. TO INSTALL, DO THE SAME THING, BUT EXTEND IT INSEAD.