Lunre

Today, the Yao Pack modpack was just recently updated, but my friend's server isn't. I'm unable to play on the server, because my Technic is using 3.1.7 when I want to use 3.1.6a_1. I tried to change it in the modpack settings, but all I got was 3.1.7... Please help, I really don't feel like restarting again.