A wobble would likely be felt the most from somewhere around 50-60MPH or a bit higher, like a tire out of balance so they are probably seated all the way. Out of round will give a different feel but you should not be having that issue.
I would check for burs first, hubs and wheels, find some sand them off or use a light file, only the bur needs to be removed.
Test fit the wheels, if OK, done if not OK or did not find burs, then do the next steps.
On the wheels I would use a strip of emery cloth, 100 or 200 grit, etc....with as many fingers as you can hold it with and lightly rub the insides fo the hole in back and forth, not in and out of the hole, keep moving around the hole, just want to lightly take off a little dab, this will help control it and not take much off anywhere.
Test fit the wheels, if OK, done, if not then I would do the hubs with a longer strip of cloth you can wrap half way around and hold an end in each hand and pull back and forth and work your way around the hub, have to dodge the studs while doing so. I would just do this a bit to ensure smooth.
Test fit again, OK, great, if not then try a bit more on the bores in the wheels.
Note, since such a tight fit it would be wise to look at the studs when placing the wheels on the hubs to ensure lined up with the stud holes in the wheels to keep the threads from catching and making it harder to get things going, might want to check the holes for any burs as well.
If this process does not work then time to consider more drastic measures but before you do anything further check with the vendor, they might not want you to even touch up the inside of the wheel bores.