Apologies if this is the incorrect forum, but since I know next to nothing about programming, but still wanted to be of some use because I think this is a neat project, I took all of the grids listed at
http://chdk.wikia.com/wiki/Grids made .grd files from them, and zipped them up.
I tried to make sure to use the author suggested file names but might have missed one here or there and my file names might be too long (I don't know what the max file name length is), but yeah here it is.