I've been thinking about the engine zinc problem. This is a guy that replaced the binnacle with a custom unit. He calibrates his compass. He glassed in the companion way bulkhead after removing electronics and moving them to the binnacle. He adjusts the alignment of his engine on the motor mounts for gods sake.
Something is going on. He could have just lied and said he changes them every year, how would we know?
He said he changed them a long time ago, it was really hard and he didn't remember when.
What really happened?
Are the threads so corroded that the last time he got them out he considered himself lucky to get them back in?
If so why didn't he just use a helecoil? If it was not possible to get a tap in their the engine is only 200 lbs. Just slide it forward into the companion way and fix the threads and slide it back.
What is he not telling me?