Thanks for the reply rfoster. My problem is that my boat came with Solas impellers that are not the right ones for the boat. I suspect I am having problems due to these wrong impellers. So I am exploring the option of getting OEM units from someone that upgraded to aftermarket impellers.
Thanks dsw222. I checked the current part numbers for your boat impeller and mine and they seem to be different. Yours uses 204-160-027 where mine is 204-160-048. Is there any part number printed on your impellers to check?