Soo... You have a Clip (text effect) and typ something and then want to see if the text is were it should be....
i would try to set my clip the way that its allways at the same place and i dont need to worry about this anymore...
use the transform tab of the clip to place / scale the clip to be were it should be
take a whole Layer (& Layer to slice) and place the Slice in the advanced output were you want it to be.
But there might be some reason why you dont want to do it that way and i want to hear them
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~self employed AV technician / Schu.VT@posteo.de