I recommend Halo clear switches. they are slightly less noisy than browns, but the real beauty is, after the tactile activation they become "harder" (i.e. more force needed to push further down).
It's an excellent way of training yourself out of bottoming out.
The thing you want is "glue records" the upper level server would serve ns1.example.com (this is an approved domain for example use, better to use example.com than making your own example up) as the authoritative name server. Then provide the glue record which says "ns1.example.com is at IP address X".
It should ask for IP addresses as well as hostname. Otherwise they only assumed people will "host" their domain in another hosted, as opposed to self-hosting.
In that case (and in any other case) change your registrar to someone else who supports glue records.