I know space is cheap these days, but is there a reason for Refmac to generate all those extra columns in the output mtz file? Refmac (as well as phenix.refine and buster-tnt) output mtz file is almost always used for only one purpose - look at the map in coot. You only need 4 columns for that, not 14. Other columns are useful for testing, but why not make them optional?
This would certainly be a low priority - one can easily delete extra columns using, say, sftools. Cheers, Ed. --- Hurry up, before we all come to our senses! Julien, King of Lemurs