Couple thoughts:

1) I used some fairly aggressive concoctions to clean my YF up. I will never play with the commonly-recommend Pine-sol solution again. It really attacked the casting and I can tell it’s rather porous now. That probably contributed to my situation.

2) Looking at the YF, that same passage that vents to the exterior, also has an outlet to the interior. I really wonder if the exterior outlet is even necessary. But the engineers put it there, so I will leave it alone.

Last edited by JW51; 02/18/2022 5:13 PM.
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