It would be really ideal to have a way to do this.. every once in awhile this happens..
a way to force close the shutter when it stutters and loses position due to a stutter/slip on closing..
IE: it closes, stutters, then stops 3/4 of the way down, because it thinks its at 0% open (or vice versa it goes up all the way but is now at 90%)
A simple way to override the close button to keep going into the negative would be ideal. In this example -10% would be fully closed.