Sorry, you're out of luck. To flush properly, the internal design of a toilet has to be far better than the old water-hogs. When low flow toilets were originally mandated, most companies such as American Standard, Kohler, Mansfield, etc, tried to use their old designs with less water. The result was many people who tired these were plagued with clogs. Unfortunately, some of these companies still are trying to tweak their old designs and are still producing poor functioning toilets. The best toilets on the market today are the Toto. Toto was and is the leader in quality low flow toilets. Most of the other brands merged and/or were purchased by foreign companies and their quality has declined greatly.