The blue gun firing off first doesn't mean anything.
If your dots are elongated now, you aren't going to make it any worse.
First set your electronic astig back to the middle point, then overfocus the gun your working on (all the way) you may also need to increase contrast to see the dots better. Then at the back of the tube, you'll see the CPC magnets, there are two pair you can adjust, both have little thumb wheel adjustments that will rotate the magnet pair in opposite directions, plus you can spin the magnet pair around the tube neck simply by pushing the thumb wheel around without twisting it.
It's been two weeks since I did the 1209, but I THINK the front pair adjusts the Astig, and the rear pair adjust Flair. Someone may come in here and help with that.
If your dots are oblong in the horizontal plain, then you want get them in more of a diagonal plain, you do this by rotating the magnet pair as one...pushing the thumb wheel around the tube neck, once you get the oblong dot in the diagonal plain, then rotate the thumb wheel (this spins the magnets in opposite directions) and you'll see the oblong dot start to "round out"...you will see that moving the magnets as a pair changes the dot's adjustment plain, and rotating the magnets separately adjusts the shape within the plain, so it's a combination of both. Use the center dots as your reference
After Astig is set, then underfocus and adjust the other pair of magnets to center the core in the flair. Then go back and make sure Astig is still correct...you may have to go back and forth a couple times.
Check focus when your done. (should be ok)
BE VERY CAREFUL INSIDE, HIGH VOLTAGE IS PRESENT!!!
Hope I didn't confuse you to much...it's late and I may be babbling