Unfortunately we can't change mod versions unless the modpack changes versions as well. There is a way to fix bugs in a mod if there is already a patch, but it is extremely time consuming and is usually reserved for major bugs (ex. server can't start).
Sidenote, moved thread from Website Suggestions to Issue Tracker.
Hello! I'm 132ikl, one of the owners of the server along with john01dav. Thank you for joining us here at Modded Minecraft Club!
There's no place like 127.0.0.1