How long have you been prey model? I forget

. Usually, once they realize this isn't just a dream they'll wake from soon, and the food will be there consistently, they even out. It could also be a pack thing. I think you said they sort of challenge each other over food? If that's the case, you could either feed them in separate places, or (if it's safe) allow them to find their place in the pack/eating order. You know them best. In our house, Abigail is the alpha (because Mozart g
ave her that position

), and Mo will wait until he's pretty sure she's satisfied before he will enter the room. I can call until I'm blue; but, he won't come until he's ready. I figure it's a pack thing, they've worked out. Well, either that, or he just gets tired of her pushy attitude.

He could easily hurt her with one bite; but, he won't. He either knows he can hurt her, or she really has him intimidated. LOL
From what I've heard from other prey model feeders is that the weight usually evens out. Overweight dogs drop what they need to after awhile, as they're not having to fill up on all the carbs in other dog 'foods' to get the amount of protein their bodies need. Underweight dogs fill out, because they finally are getting the nutrition they need in the amounts they do eat. Maybe, just a little

; but, it's not anything most of us haven't been through, too. I was TERRIFIED when I first started. Mozart did have a bit of a problem one time with a piece of bone that got lodged in the roof of his mouth

But, I was right there to notice he was pawing at his mouth. I reached in and disloged the bone, and while I was thanking God, he nonchalantly reached over, took it from me, and ate it

Just use good judgment, and be available when they are eating. And, if you do have an incident...? You'll take care of it. We don't hear all the close calls on k***le, and very few are reported on chew toys. But, for some reason, the world awaits for one of our prey model fed pups to gag, so they can say:
"Seeeeee....told ya!" LOL
Try to relax, and enjoy this step toward better health for your pups.