I accidentally pressed V and extra time and now the chalk circle is stuck on 5x5. Pressing Shift+V does nothing at all.
Edit: I have the Key bound to its original with no other mods using this key.

Shift + the charge keybinding will reduce the size of the chalk circle. If you continue to have issues, try resetting your keybindings

I have the Keybinding Set Properly and have attempted to do just that many times.

I have no idea what's going on with your set up - you are literally the only person to report this issue and there are thousands of people successfully using this.

I'm going to need some logs (full fml-latest-client.log and latest.log) in order to get more info as to what's going on.

Bizarre... Just Bizarre. Its Started working after I opened and closed the GUI for a progressive automation stone chopper... Sorry I Cant get logs as I am leaving home soon.

Hmm... Sorry for the trouble. Would give you logs but fml doesn't seem to be writing to log files correctly I'm not really gonna worry about it though because im getting a new computer soon anyways.