Nice, Wik! Yes, the seal was a little tricky. I had t set the seal time up a little on my Foodsaver Pro 3, and had to be careful to keep the little vac assist thing in place (the "VacMouse"). When it's vacuuming the air out, you have to keep massaging the air pockets forward, and then hit the seal when you've got all you can get. Close enough is ok with these. There are no grooves, like on a regular Foodsaver bag, so nothing to channel the air. I think my first attempt came out fine, as it appears the bag is almost completely adhered to the surface. I'll get better with practice!