Hi, I am new here. Over the summer I received a 15-20 yr old kart from a friend. So far I have repainted, remade the seats, gotten a new starter and done some basic maintenance. The engine runs fine, but the clutch is very old and worn. I was going to try and replace it, but when I tried to find one with the same bore, none came up. Do you have any suggestions on where to find a 7/8 centrifugal clutch, or what to do?