Gadget Is it? If you're using matching maps to begin with, it should be nothing more than entering the same values in the "Explicit texture transformation" fields?
If you're not using matching textures, it's probably an issue anyways? Or am I mistaken?
The most common time I find this happening is when I use a generic 'noise' bump and/or a generic 'scratched' shine map: want to position marks 'just so' on a surface and can't.
The other thing I've had issues with is that I have one bump and shine map for a timber or tile floor with a specific layout/pattern, but several different albedo's showing different colours. If I increase the resolution/size of the bump in comparison to the albedo, then it can be tricky to get them to line-up again. If I want to apply one of these bumps to a flat colour with no albedo, then there is no way to position them.
andybot : How do you scale your images? If you type in the x,y values from the edit materials tray in SU then the associated maps transform with it. If you use the r-click option to edit materials, then only the rotation element will be applied to the associated maps. (* I'm fairly confident this is the case because this is my work-flow and I always have to scale the materials in SU.)