Oh.. one other thing. I see you're using the Pacer "Z-Ends." Those things are great and they only fit the Pacer bottle which is why I only use Zap. I hate the bottles that just have a spout on the end. If it clogs you're screwed. With Z-Ends you only have to pull off the tip, throw it in a jar of acetone and put on another one. A few hours later the one in the acetone is ready to use.

I bought a container of Z-ends years ago and they're still going strong because of soaking them instead of tossing them.