OK...had my cleanouts inspected and cleared and septic pumped....all fine. So, it has to be from the septic to the drain fields. Have a probe and know where my line is from the septic the fields and plan on checking the line myself. If that line is cleared then it has to be the fields...right? I dont have any soft spots anywhere around the line or the fields. If I dig out that line, what do I expect? Ahuge clog? Is this line under pressure when I take it off? What does the connection look like at the line/field junction? How will I know I have to replace my drain fields?