Thanks. I tried that at Lowes and the guy screwed it in and told me it was an M6, so I bought those and brought them to practice, and it was a no go. Diameter was too large. Korg told me it's an 10-32 so I bought some of those and they were either too big or it's possible the threads were/are different. I'm not sure. They do appear to be rack screws as my drummer was able to take one out of his rack and it worked. Only problem was it was way too long and I wasn't sure if they would make contact with anything on the inside. That and they aren't flathead. These screws are flathead and are meant to be countersunk into the rack ears and sit flush.
I went back and forth with Korg yesterday. I understand they don't keep parts on hand for everything, they are just the distributor. But I laid it out to them like this: I just bought the most expensive commercial bass amp made today, as far as I know anyway. And they are giving the person that just spent over 3 grand on Aguilar gear a part number for something that should have been in the box in the first place and telling him to find it himself. Told them I'd not be purchasing anything else under the Korg umbrella and thanked them for the time. They wrote me this morning that they will send me the proper screws. So, in the end, hopefully they make it here and I can put the headcase to good use.