I currently own a K-1500 SP sectional machine. I am considering purchasing a K-1000 Rodding machine but i'm not to familiar with the rodder. can someone please explain to me what applications the rodder can be used for instead of the sectional machine? how does the rodder work different from the sectional machine? and i notice that the rodder only has a 5/16 cable seems kinda small to clean 8 to 24 inch lines. i guess i'm not sure exactly how the rodder works can someone please explain?