hi all im not sure how old this problem is but many have posted about it. i got an AS champion toilet this year and having ghost flushing problems. I paid a plumber to install. That plumber and another local plumber i called "never heard about" flush valve problems with the Champion toilets..AS sent me first the flush ring/flap thing that didnt solve it then they sent me a full flush valve kit and a fill valve kit which has now been delivered. The plumber who did the install but "never heard" of this problem wants to come see the problem... .my concern is this if this is a way to charge me for a 2nd visit should i insist they put in a NUFLUSH? obviously i can have one here order online from amazon...etc.......DOES IT REALLY SOLVE THE PROBLEM? HOW OLD really is his champion problem? tnx all.