Looks to be working pretty well now. Getting a few not-so-sharp images still, but could just be due to gimbal shake...
Good to hear - thanks for reporting back!
What Tv value is reported in the exif & the script log for those images ?
Here's a selection.
2013Dec10 11:05:32 30) IMG_1390.JPG
2013Dec10 11:05:32 meter : Tv:1/400 Av:2.8 Sv:80 753:753
2013Dec10 11:05:32 actual: Tv:1/1600 Av:- Sv:320
2013Dec10 11:05:32 AvMin:2.8 NDF:NDout foc:infinity
2013Dec10 11:05:38 31) IMG_1391.JPG
2013Dec10 11:05:38 meter : Tv:1/320 Av:2.8 Sv:80 733:733
2013Dec10 11:05:39 actual: Tv:1/1600 Av:- Sv:320
2013Dec10 11:05:39 AvMin:2.8 NDF:NDout foc:infinity
2013Dec10 11:05:46 32) IMG_1392.JPG
2013Dec10 11:05:46 meter : Tv:1/400 Av:2.8 Sv:80 739:739
2013Dec10 11:05:46 actual: Tv:1/1600 Av:- Sv:320
2013Dec10 11:05:46 AvMin:2.8 NDF:NDout foc:infinity
2013Dec10 11:05:53 33) IMG_1393.JPG
2013Dec10 11:05:53 meter : Tv:1/640 Av:2.8 Sv:80 809:809
2013Dec10 11:05:53 actual: Tv:1/1600 Av:- Sv:200
2013Dec10 11:05:53 AvMin:2.8 NDF:NDout foc:infinity
2013Dec10 11:05:59 34) IMG_1394.JPG
2013Dec10 11:06:00 meter : Tv:1/640 Av:2.8 Sv:80 810:810
2013Dec10 11:06:00 actual: Tv:1/1600 Av:- Sv:200
2013Dec10 11:06:00 AvMin:2.8 NDF:NDout foc:infinity
Exif shows all were shot at 1/1600, f2.8, and the ISOs all match up.