"DerbyDad03" wrote:
I checked the plastic rod from the handle - it's straight and tight -
and the handle isn't tilted in any way. As far as I can tell nothing
has changed in the many years since the guts were installed, yet for
some reason I had to shorten the chain to get the flap to stay up.

Any thoughts?

You know that little guy in the boat inside of your toilet tank?

Sometimes he gets bored and tinkers with stuff.

Jon