piCorePlayer and NTP updates

Hi,

I just installed 5.0.0 on my RPi3+HifiBerry AMP2+. Works great. I noticed that NTP is already installed (it wasn't with v.4.1.0). How do I change the server? I tried setting it to my local server in /etc/sysconfig/ntpserver but it keeps setting itself to the original line after reboot. Any tips?

Thanks