I have no experience with the Peak 88's, but I'm betting that it was the tune. I've worked on a few pair of Head's recently (Monster 88's and Monster 82's) and their factory base and edge finish leave something to be desired. Properly tuned they will hold on anything and ski great. I did send back a pair of Monster 88's last year that had major line issues. Head quality control is not airtight, but their skis do ski very well.