please, i mean no offense, but are your scales very accurate? are they like for diets-kitchen scales. one of the most critical parts of soapmaking is accurate measurements!
i use a digital read-out postal scale that i got from staples that measures up to 11 pounds in both pounds, ounces and grams.
Any measurements between these numbers, you will have to guess or round up/down. This won't necessarily be detrimental to you soap, but needless to say you won't always get exact measurements.