I altered the gralat class a while back. But I noticed that it's "touch box" extends a few tiles to the left compared to the right. I've tried fixing this with setshape, but it doesn't seem to alter anything. It is still using a gani, and i used the old gralats.gani text file as a template if that matters.
It's kind of annoying really, especially if you drop a gralat to the right of you because then you have to actually "dodge" it's shape or else you'll end up picking it back up.