We have a one piece Glacier Bay Toilet. May problem is I can't get it to flush properly.I have tried to adjust the water level, or the chain for the plunger but I can't seem to get the toilet to flush completely, there is always some left requiring another flush. Is there something you can point out?

Maybe we should ask why you replaced the old toilet, was it not working just like this one? Could be a slight blockage in the closet bend or drain pipe