coupler

We had some new vibration on our boat with the engine running, following installation of a new transmission by a diesel mechanic. I hoped it might improve on it's own once the transmission wears in a bit, but that didn't happen. I read up on engine alignment, and debated whether to attempt...

Hi, I was wondering if anyone has any experience with their engine coupler? I need to align my engine and I think the coupler is bent. I took all 4 screws out on the coupler and both sides now don't align perfectly straight as it should. It seems the coupler on the prop-shaft is the problem it...