[Chesfisherman1]

The CO detectors are not in cabin and are handheld. He bought 2 sensors from 2 manufacturers to ensure good data during debug.

I like the soapy water spray to all exhaust parts with a visual inspection after starting engine.

For now my buddy is not engaged with his boat allowing Marina to all investigation.

I believe no other input is needed.

I will report back on issue once resolved.

Thank you