I put some dye in the system several weeks ago since I was having to charge the system every 3 months or so (just one can).
The compressor is slightly leaking around the pulley. Looking at the picture of a new compressor, I do not believe it is leaking from a hose since those are further back and on top of the compressor. It is clearly leaking from the clutch/pulley area in the front.

Any experience or guidance with a similar problem?

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2008 S550
2010 GLK350
1997 E420 (retired)
2005 CLK500 (retired)