After installing a a.s. 4049 3 or 3 1/2/gal the bowl will not clear unless the handle is held down.Things I have checked wax obstruction(remove and reinstall),trap obstruction( placed bowl in tub and simulate flush),water level (full as possible),Tried low profile seal inside tank to bowl,install flapper with stryafoam,all holes under rim open,:furious: I assume venting is fine,it worked before. Thanks for and advice in advance.pwa