The reason for the shift is that the glow changes where the appearance of the white part of the letters appear. Adding the glow shifts the white portion slightly to the right and down a little, trying to keep the x,y coordinated of the text box the same, -228 and –52. See attached photos.
This can be corrected by going into the movie clip and working on the transition from white to glow. You will need to experiment a little but it’s possible to improve this a bit. Zoom way in on a letter like the “E”, which has a sharp top edge and vertical edge. Pull out some guides and mark off the exact line on the top and bottom of the top section of the “E”. Then set guides for a vertical surface of the “E” in the same way.
Now on the timeline of the movie clip, scrub between the white text and the text with the glow. See the shifting?
The solution is to change the X and Y coordinated for the glowing text just enough to match the normal text. After some quick experimenting I changed them both a little to get the best match, something like –228.6 and –51.5, but you may have slightly different coordinates.
Eye for Video