Yes, 9 was too much. but a large percent of it was on the helmet dome.
My last mold turned out pretty good, but the dome rippled when i was casting it.
So I did about 4-6 full coats, with an extra 3-4 on dome, and re-inforcing the cheeks/mandibles and the key holes.
I going to pour a clay solid of it tonight, and start my sculpting, cutting etc.
As far as I can tell, the overcoat sealed/solidified it enough. I only plan do do maybe 5 runs on this mold, and it was a test mostly.
Ill pull a resin of it before I fill it wlith liquid clay and pos *** to see if it worked out well.