Oh my. Now that's one easy to find game...
For starters, you might have tried here:
http://www.back2roots.org/Games/Downloads/K/
Downloads are only enabled part of the day, but on the other hand BTTR has the permission of Sierra to offer those King's Quest games. So you don't have to feel guilty leeching from there!
Besides, you could have found it in one of these places if you had actually bothered to look for it on your own:
AmigaMagix:
http://www.crosswinds.net/~bestamiga/
LeChuck's site:
http://amiga.supergamez.hu/
The DreamZone:
http://members.tripod.co.uk/TheDreamZone/
... and there's probably a dozen others, as IanCharge has already pointed out!!!
Did you ever use Jambo's search engine or the UAE Files Archive as described in RCK's announcement? Sometimes a simple search with Google will do.