Tough question, very difficult to find any experience with mechanic
who will want to repair while in the boat
. I just replaced starboard sd40
with the new sd60. I have an sd50
on port that is 2 years old already slipping, it has also been noisy since day one. Long story short, pull it out and replace with sd60. Not sure how difficult to do on your 50'. On our voyage 45 one day job.
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