Please read the Forum Guidelines. You have on two occasions posted to existing threads, for things that are not directly related. Also, this question is very similar to one you have asked earlier.
I will split this into a separate thread (since the subject is different from the thread you appended to, to make matters worse)
The simple answer is no, but you could prevent the top and bottom being stretched by doing a dbLayerAnd with a rectangle which is a slightly stretched version of the bounding box. I had thought of putting together an example, but since I'm still having to guess what precisely you're doing (as each post seems to have contradicting requirements), I'm going to wait until you've clarified what you're trying to do (as I asked for in your other thread).
Please bear in mind that everyone on these forums is a volunteer, and are doing so in their spare time, and so you need to ensure that you minimize any calls on their time by maximizing the amount of information you provide.