I had my main sewage line rodded and video. upon inspection, it was found that there are several areas where the tree roots are comming in from the top and joint areas of the line. There's one "drop" area but not that serious, and several cracks on the hub, and a couple of holes. I was recommended to put a new main sewage line, about 90 feet. This is where the problem lies, due to some landscapping, I'm not looking at this option. I though of renting the machine at my local store, the coils where thicker (1 inch). What is the best suggestion for roots removal in the line? is this safe? where do I get the product?