Hello

I am trying to run dosbox on my new HP Elitepad 900 tablet. I have installed dosbox and replaced original SDL with touch enabled one from here. I have followed instructions provided.
Everything is good except one issue. The thing is that it seems that dosbox thinks that my screen size is bigger/smaller that game window. This gives that if I move my finger to the topleft corner, the cursor follows behind centimeter or two and therefore cannot reach a corner (my finger have nowhere to move further, but the cursor is still behind). And vice versa - if I move down to bottom right corner, the cursor "runs" in front of my finger and gets to the corner faster than my finger.
In other words the cursor do not follows where I tap exactly, but have like +100 px shift.
Does anybody have the following issue? Maybe some fix exists?