Hi I have a similar situation but I have a clean out at the end of my waste line which is only about 4 feet long. Am I better off just using a power auger to clean the pipe out or is this a very temporary solution, how long will I get before having to re-auger that line. My concern about using a French is I still have a 6 in section that is going to cause problems later, am I off track, would appreciate some advice. Thank you.