There's also another jet (main jet) inside the emulsion tube (big brass screw in the middle), take it out as well.
Nope. Well, yes... I assume you mean the main jet is the one in the middle of the three brass doohickeys. To the right is the pilot jet. If that is what you meant, then yeah. But I think the OP already got that out.
There is nothing serviceable inside that phallic looking brass tube. And as far as I am aware, it is not even removable.
Me and ****** got into it about that, it is just a tube for the needle to sit inside while it is at rest rather than it just going through an open hole.
While you have them off the bike and the bowls off, make sure your main jets are in order - dont worry about the length of them. Not all carbs are the same.
The middle two carbs should have jets two sizes larger than the outer two.
For example, stock is 170, 180, 180, 170. Mine has a dynojet kit and is 136, 138, 138, 136.
All the needles should be at the same height.
All the floats should be at the same height.
All the pilot screws should be set the same.
Stock settings are the above jets, 13mm float height, 2 1/4 turns out on the pilots.
Dynojet kit says to put pilots to 2.5, and leave the float height "stock".
These things can be adjusted later for tuning purposes.