Sorry I missed your condo last night. We played 18 holes of golf yesterday and it's nice enough weather to walk so all that fresh air and I fell asleep on the couch!
I'm glad you figured out the lid/no lid thing for the box. Cats know what they like.
Don't worry that you will upset anyone here if you don't take our suggestions on food, feeders, LBs, ketone tests, etc. All of our cats are different in personalities and each of us knows what works for them and us. They are only suggestions but if they won't work, it's ok.
If you like feeding raw, and I am a huge advocate of it, you might want to try
EZ Complete from FoodfurLife. It is a completely balanced supplement, and in fact has some wonderful things every cat should get like digestive enzymes and green lipped mussel, and none of the stuff they shouldn't have like gums. You just add the powder and water to meat you can buy ground at the grocery store. If your cats like chunks, you can just buy the meat and cut it in bite sized chunks and add the supplement and water.
I buy my meats ground, no bone, at Whole Foods and an exotic butcher for the venison and any other ground meat I can get that has no bones in it. The owners of the company have a lot of cats, each, and so they buy meats at the local supermarket and buy what's on sale. But I, personally, only eat pastured or grass fed, organic meats so that's what I feed our cats.
I make about a 1.5 lb batch of each food, put them in 1 oz portions in ice cube trays to freeze, and then take out the next day's portions the night before to thaw. Making the food takes me about 15 mins from when I get the bowls out u til I wash the last dish. My cats love it. You can also cook the meat and add the supplement. The website has a ton of directions on how to make the food raw or cooked and how to transition the cats. Interesting,y, I did try Rad Cat and my cats wouldn't touch it!