Wow John, moving those certs to JFFS makes a lot of difference! I have it up and running now:
NVRAM usage 57091 / 65536 bytes (87% utilized) --> instead of 95%
Thanks again!
ps. for all the others that are going to try this, (for me) it looks like the dh.pem is not movable, but the rest of the keys and certs are. The dh.pem file content keeps being recreated in the keys and certificates field.
My example is as follows, and I entered this in the Custom Configuration field:
ca /jffs/openvpn/server2/ca.crt
tls-auth /jffs/openvpn/server2/static.key
cert /jffs/openvpn/server2/server.crt
key /jffs/openvpn/server2/server.key
And this in the keys & certificates fields:
/jffs/openvpn/server2/ca.crt
/jffs/openvpn/server2/static.key
/jffs/openvpn/server2/server.crt
/jffs/openvpn/server2/server.key