realskiers

Understandable.  I think 1/3 is a bit much for the Magnums, just too demanding of a tune for that particular ski.  I have 1/2 on my Magnums and 1/3 on the original Supershapes and Supershape Speeds.  As to the effect of a change, I noticed it too.  My original Supershapes came to me with a .7/2 (according to the seller) which I skiied and enjoyed for a month or so.  They were in need of some maintenance, I was busy and I usually opt for 1/3 for a purely hard snow/ice ski which this is for me.  So into the shop they went.  The first day out with a 1/3 on the felt strange for a couple hours.  My "platform" had changed.  It took a couple of hours but I have adapted to the change and I like the additional edge grip of the ski now.