As reported from the guy I bought it from, the previous owner was a collector and had taken steps to store the bike properly. The bike seems to have been off the road since 2001. The tank and carbs have been carefully drained and a quick inspection of a float bowl and the tank interior showed them to be spotless. All the air box and carb clamps had been loosened. Even the master cylinder had been purged of fluid. Unfortunately, this didn't save it as someone had pulled the lever, seizing the dry piston into the bore. Fortunately, I had a spare master cylinder on hand, and have already overhauled the caliper and bled the system.