Flash - Adding Dynamic Content Through Interval

I am having an issue with adding dynamic content through an interval. The content is being added to the screen, but the X position, as well as the tween, seem to be completely out of sync. The below is a screenshot when the interval is at 100 milliseconds, as it shows it best. The application needs to work at 200 milliseconds (where the error is not as clear, but the lines are still occationally too close, roughly every 4th). As can be seen, there is a clear discrepancy between positioning. It remains fine for a few, then changes, changes again and then finally reverts back to what it was.

Here is my code that controls this section:
function XYZ(){
Score = 90
var timeBefore = Score
if(timeBefore <= 2.4){
timeBefore = 2.5
[Code] .....

Note: It also happens with 200 and 300 milliseconds, although less prominent.