Hi, I've also been wanting to try this on a date command with the same problem for a while now, but don't have a donor module yet.
I remember reading somewhere (perhaps on this forum, so sorry if I'm ripping off someones thread) that you can gently pop them off the dead module with a scalpel, then glue them in place on the good module using silver epoxy (conductive glue) applied with a pin (much more precise than soldering). I guess that the usual rules of having a very steady hand and watching out for static electricity apply. I'd be interested to know whether it really is this straightforward or if anyones tried it