To hopefully help others I want to share my carb replacement experience, even though admitting to buying two overhauled carbs in the space of less than 6 months will probably result in my membership in the CB club being revoked.
I had an EDM 830 installed in 11/2017, about a year after I bought the plane. They were not able to put the carb temp sensor in because the carb was so ancient that it didn't have the spot to put the sensor. The shop said the carb would have to be sent out, drilled,