Hard to add anymore than what has been said really. Table salt is your problem with tyring to keep the salt dispersed. It is not as fine as other salts and will fall fast in your plastic, espcially if your plastic is overheated.
I would also give the mic a try. A Pyrex or Anchor brand cup will work. Get a 1 cup deal first.
You can heat an 8oz cup of plastic for 2 minutes and then look at it. You are looking for the plastic to still be clear, no yellowing, plus some white on the bottom of the cup. If you see this, just put your cup back in for 15 seconds, take it out and stir good. Nuke for 15 more seconds then add color and flake. If your plastic is yellowed after 2 minutes, back down to 1 min and 45 secs. Doubt it will be though.
If you are adding salt, try adding the salt in the beginning so you can cook the moisture out as you are cooking your plastic.
The consistency you are looking for when doing your sticks is around pancake batter. More on the thick side vs the thin side. The salt you ordered will help tremendously!!!
Keep at it!!!
Jim