[rjsurfer]

It might be worthwhile to pull that wheel off to see exactly where it's coming from. Remember these axles are notorious for leaking grease seals.

If it's the seals and the shoes are lightly wet with grease you can clean them off with brake cleaner, if badly soaked get new shoes or swapout the wheel assemblies. Over the last ten years pollution and environmental concerns have neutered most degreasers making it impossible to clean deeply soiled brake shoe material.

Every time you take the drums off swap the seal by the way.

Ron W.