Is there any hotkey or macro command that I can write to change action bars reliably?
I've been soloing mostly so far, running with PUG/ARC/MAR weaponskills equipped on the first action bar, and CON healing and buffing spells on the second action bar. Usually I cast Protect/Shell/Shock Spikes (does no damage as a PUG, but it still stuns enemies regularly so I prefer it to Stygian Spikes) /Sacrifice on myself before a fight, and then if the other spells are still up I just recast Sacrifice for the 2nd, 3rd, 4th mobs etc.
Usually, I can change to the 2nd action bar to use Cure or Sacrifice on myself in the middle of a fight just by pressing the down arrow key, but for some reason this doesn't seem to always work. The times it doesn't, I end up scrambling for my mouse to try to click the tiny arrow on the action bar itself. I wouldn't say I die often because of this, but it happens, and it's getting annoying.
tl;dr : Is there any hotkey or macro command that I can write to change action bars reliably?