On first lawn all is good. On second lawn blades start up slowly. Now blades are dragging engine down. Pulled belt all pulleys seem fine. Engine runs fine without belt on. I now here a clicking sound from clutch now and then. It acts like bearing is heating up and causing excess load but all spindles are only warm to the touch. I called clutch mfg and he blames spindles but they all seem smooth running. Any suggestions on trouble shooting issue.