Running Lean?

Looks rich and undertimed to me (initial timing anyway). To be honest you can't tell much unless you cut the engine and pull the plug for a certain condition. If you want to know how it's doing at WOT then after a pull you slow down and cut the engine off as quickly (safely) as possible. Same goes with cruising conditions. Cruise at a certain speed for a couple minutes, then get then engine turned off as soon as possible to preserve the reading. The plug in the pictures looks to have quite a bit of idle time on it so that's all you can read. It's also helpful to start with a new plug.

All that said, it looks ok to me. Sure it looks like you could clean up your idle and maybe give it more timing, but not bad. What is the timing set at anyway? You running the vacuum advance? Did you clean the plug at all before taking the pictures?