Well, I am sure there is an easy fix for this but before I went and started replacing parts, I wanted to see if anyone had any thoughts. I hear a hissing noise coming from my toilet. I am about 99% sure it is coming from my tank area. My thought is it is coming from the float area. Maybe, the seal on the top is going bad? Also, on the same toilet not all the toilet paper flushes. Usually we get 1 piece that wants to come back up. This is a 5 gal tank and probably is quite old. I bought a new flapper for another reason and that didn't help. It is one of those you can adjust for a maximum flush (if you know what I mean) Any ideas would be appreciated. Thanks.