Inventory dragging issues

[Black_Death]

Whenever I go to click and drag on an icon in my bags, I tend to pick up the wrong slot. If I grab anywhere from the middle to the left side of the icon, I will pick up the item in the slot to the left of the one I am aiming for.

I tried changing bag sizes but it didn't help. I prefer the smallest (664H?). I play in Windowed mode 1280x1024 (desktop resolution).

FYI, I have a dual monitor setup.

Thanks for any help you guys can give. It is more annoying that it may sound.