Bravo3 Lowers

Took my boat out of the water and I have gear lube leaking out by the prop on the starboard outdrive. Can I get some opinions on what to do. I feel at this point it may be best to replace the lower because there is naturally corrosion on the housing around the prop shaft .
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PC BYC, Holland, MI
2002 FV 342 on Lake St. Clair - Past Commodore SHC - Vessel Examiner USCGAUX