Yeah I've tried having both sides down, it doesn't hold it down, it just pushes it down once. Its on play once too.
Have you changed the loop settings?
-Edit the rune
-Click on the "Two arrows" (looks like the recycle symbol) in the upper right hand toolbar
-You should be looking at the "Select Playback Behavior" menu now
-Select "loop until second press, then play once more."
-Click o.k.
-Click "Save" in the upper right hand toolbar
-For testing purposes, in your pack setup, assign this macro to a tac switch instead of a stock button (I always use the tac switches when troubleshooting problems)
-Go re-download and re-load your runepack into your controller and give it a try