content: I just bought this item & have made 6 loaves now. All have failed as the top & sometimes the sides, have fallen in.I followed recipes from the manual plus 2 from online. I've adjusted the yeast, flour & liquid ratios (as the manual says fallen tops is from too much yeast and/or liquid). I've even purchased a different brand of yeast, all with the same result.Can someone please tell me what I'm doing wrong? I don't think it's the unit as it seems to be performing correctly, but I just can't get a successful loaf out of it.