See if the water pump is weeping coolant. It's the big round cover on the right hand side of the engine. If it is, it might be pump bearing replacement time.
Pump the tires up and make sure it runs strongly. I think the exhaust eventually wears out, and the bike becomes down on power. See if the tires are in good shape. Watch for rot. See if the electric start works well when the bike is cold.
I only test rode one Super 9 LC, so there's not a whole lot I can tell you.