As I was going to say on IRC before you left, we cannot modify these records for you. If you want to change them, revert the nameservers to the default ones at the domain registrar, then use an A record to point to x10's servers (the IP you'll need is 69.175.121.66). That way you'll be able to manage all of the DNS records for your site at your domain registrar (the dns editors in cpanel will no longer work)