Why did mine fail?
Pick the symptom. Each answer comes straight from the converter rule base — and filing testimony about your bake is what sharpens the next answer.
Gummy texture Fell apart / crumbly Dense / heavy Dry Sank in the middle Bland Spread too much Gritty
Dry
Check your blend weight first (see Dense). Then check the bake: GF goods dry out fast past their window — except cakes, which want the long end. Freeze with the right starch: cornstarch-thickened fillings weep and turn spongy after freezing; tapioca/potato/arrowroot hold the freezer.
Run your recipe through the converter — it applies these rules automatically.