I have a dule flush high effencency glacier bay tolet. I am experancing flow rates that do not allpw the disposel of waist properly. The tank fills to about one inch below the overflow. This fills the tank to between 1/4 to 1/3 . Do you have other lots and overflows that will allow me th raise the water level. Or are fhere after market items that will help
Thank you
Robert Koblinsky