Hi
I think the report was by Bob Davy in Flyer magazine. It is my recollection that Bob found this a particularly nasty aircraft. (I don't think the owners were to happy). I operate shares in a Chippy and a YAK. There are very good reasons for them being so common and allegedly good reasons for Krakuj being so rare.
Good luck with your purchase, as a Chippy owner do not dismiss a YAK because it is common.
All the best
Wide