I got an American Std. toilet from the 1950's. Fluidmaster fill-valve was installed
maybe 10 years ago.

Tanks fills OK, but it seeps a little after fill-up. I push the float down a
little and it stops. Let go and it seeps again, constantly running a little
water into the overflow tube.

I tried adjustments, didn't seem to help.

Valve is shot, needs to be replace. Eh? I wouldn't even post query if it
didn't stop seeping when float is depressed. Never saw the guts of one of
these.

Thx,
Will