I bought a 520 that has been sitting for 6 years from a divorce. It was hardly ridden, maybe 60 miles. Put new plastics on, cleaned up, new tires, chain, sprockets, fork seals, hose lines, gas lines, grips, and carb rebuild. Took it to the shop to have the seal replaced by the water pump since I just wanted another eye on it. The damn pinhole under the water pump still leaks fluid! Other than that this thing can move! CAN YOU SUGGEST SOMETHING? The shop did say the waterpump was pretty rusty. Thank You!