i havent really checked but when i did a quick look, it looked like the bottom of my header was kinda pushed in flat about halfway so instead of having the space of the full pipe its got like the space of half a pipe. it was raininggg alll day, and u know how some sewer drain are raised up above the road? well there was one of those, except the whole road dipped down right there and the rain filled in the dip and i happen to go in the dip and the sewer hit my header. i just wanted to know if the headers being that dent in can affect anything?? hopefully there not, but if they are is there a way to un-dent them?