[remodel4@comcast.net]

I get vibration starting around 2000 rpm. Standing above the struts. Engines were replace 4 years ago and now have 300 hours, [454s].
Surveyor suggested alignment. Cost to do it about $1000.00.
My mechanic suggested having shafts taken out to be checked along with the props. About 2100 hours on gear behind transmission.
I'm hauling boat out to have all sea cocks replaced, they are frozen open. I count 8 of them.
Any thoughts on the vibrations.
Previous owner never felt the vibration from the helm.