Weighing is something I plan on doing for my next batch of Muscovies and for my 2014 pea eggs. My goal is to get 95% hatch rates and I think weighing them is probably the right thing for me to do.
-Kathy
You'll get there!
I have been hatching out eggs for over 50 years.. I have 100% hatch rates on undamaged fertile eggs
you just have to know your flock.. tend to it's needs.. practice proper sanitation and handling of the eggs... know how YOUR incubator works in YOUR home... and then let the eggs tell you what THEY need...
after that it's easy peasy to get perfect hatches