In the map I'm making I would like to have a gel dispenser on the wall. Like in this video: http://www.youtube.com/watch?v=-RuY3tR-9xE

The problem is it never even makes it out of the tube because its not fast enogh.
I've tried:
-a trigger_push
-a linked_poral_door setup where I created as seperate room and dropped the paint there and portaled it inside the dispenser.
-Increased the blob cound per second, I currently have twelve.

All of them failed. Anyone have any ideas?

I had this problem as well, you need to orientate your dropper in the direction you want the gel to go (there's a little arrow on the helper if you zoom in). The properties that define speed are "Min blob speed" and "Max blob speed"; if you want a constant speed make these the same value. I found a value of about 500-600 to be adequate.

Thanks, fixing the speed solved the problem.