mrsgok, a direct exchange probably means that your stuff comes out too dry/leaden? gluten-free starches absorb a far bit more liquid than wheatflour. as a rule of thumb i add a 5th to a 4th extra on first try, and keep increasing extra liquid til it either gets better on repeat bakes, or bin the recipe. it's just one of the things that drives me nuts gluten free baking, but i'm getting there. another thing is that when it comes to bread, it doesn't feel like proper baking anymore. basically you end up with this really wet slop that you don't knead and have to squidge into tins while it adheres manically to your hands. but comes out tasting good.
another fan of dove farm SR flour. works well.