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Vibration dilemma
On my Catalina 30, with Universal 25, we get a vibration at various rpm''s. Sounds like something loose rattling in the locker, but we cannot locate anything. We replaced the prop, the cutlass bearing, checked engine alignment, made sure the zinc was on fast. The vibration is more apparent at certain rpm''s , but seems to dissapear at others. No rattle with the transmission in neutral at any rpm. Any ideas??
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