slant is running hot

that is exactly what i was thinking of doing, but decided i better try my luck flushing it some more today. i cant believe how much more crap is coming out since last time when i tried the vinegar and a real strong degreaser. one or the other must have really loosened the crap up. i want to make sure i know what is wrong before i buy a single thing. i have issues with buying unneccesary parts. so what is this "fish tape" i always thought those were for pulling wire? guess im thinking of something else.