I have a standard toilet about 30 yrs old...it has fluidmaster "guts" that are about 5 years old. the toilet works ok, but it takes 65 sec to fill tank after flushing. I turned off water, took top off fluidmaster column, reamed column with straightened coat hanger and then turned water on/off to flush column. Tank still fills slow. I think it might be the inlet seal (part #242) since fluidmaster site says seal may have swelled. Thoughts?