I have installed 2 Cadet 3 toilets in the past with no problems and have been very happy with their performance. Moved into a new house about a year and a half ago and decided to change the 1997 Gerbers that clog at least 3 times a week. I bought the Cadet's from a local plumbing wholesaler in hopes of a little better quality than what gets shipped to the big box stores. The first thing I found out was that the bowls are now called "Flowise" to accommodate 1.28 gallon tanks as well as 1.6. I have the 1.6 gal tanks.
After getting the bowl set, I installed the tank. The first thing I noticed was that the pre-installed bolts didn't quite line up perfectly with the holes in the bowl. If one bolt was relatively square with the hole, the other would be cocked enough inboard such that the head of the bolt would not set flat against the rubber washer. After messing around to get a happy medium, I decided to turn the water on. Within seconds, water was dripping out around one of the bolts. I tried the tank from the other bowl and it looked a little better but still leaked (this time on the opposite side).
I am not a plumber but have installed at least a half dozen toilets and have never had a problem like this. Any ideas???