Re: toilet not flushing properly
First check the full level to make sure it is correct. If you have a Styrofoam float on the chain above the flapper, remove the retaining disk and move it down the chain a half and inch at a time until it flushes properly. If you don't have a float above the flapper, try shortening the chain so there is very little slack when the flapper is closed.
There are also adjustable flappers that you can dial the length of flush.
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