: I get a slow flush most of the time.but then I'll get 2 or 3 good flush's. I ran a power snake down all my clean outs and found about 20 feet in,the snake would hit some thing. But would pass through.I coudn't see anything that my snake would pull out it seems that the clog is under the house.Help whats next.

It may just be the toilet itself.
Things in the trapway can cause that.
That and a backfilled main line.
If the main line were backed up, you would see water raising in the tub or water leaking around the base of the toilet.