grease on the drive pulley

[skunkhome 0]

When I got finished mowing today I noticed that there was a splatter of grease on the drive pulley behind my planetary gears on my Shuttle Drive. I had not noticed the grease before I repacked the Planet gears last week. Could it be that I put too much grease in the hub and overfilled the cap. Is it possible to have forced excess grease out the back seal by "hammering" the cap back into place? Luckily it has not contaminated the drive or forward belts.