Well, dry weighed and now sitting in jars curing.
You were almost spot on with your guess and I tell you what this is really freaky.
Plastic box for weighing = 1.765oz
NET weight of first box full = 0.925oz
NET weight of second box full = 0.840oz
Total weight of dry harvest = 1.765oz... equal same weight as my weighing container - odd eh?
I lost a small amount to mould - not too much.