FM8: DITA images being rescaled

Hi,

I'm using Snagit (and other tools) to capture screengrabs for my documentation. They are captured at 96 dpi. I'm inserting them into DITA files (I'm using DITA-FMx) and everytime I re-open a file, Framemaker has scaled the images to 133.33% (96/72 * 100) - which I suspect wouldn't happen if they were 72dpi.

Other than capturing at 72dpi, is there any way I can stop this happening? It's a real nuisance as I keep having to go through my document and manually scale them back down to 100%. If I generate a book from the ditamap, I have to do it in the framemaker files too.

Grateful for help,

Ian