I was really wondering about a 73.5g steel shaft. I need a .355, so I'll look up the 850/950GH and check the weight. I played 14 holes today with my new favorite clubs (IsI Nickel) with the stock ZZ65 shafts. I'm not sure it's the MDLT swing thing or not but I was shocked how good those shafts felt when the swing is on a good path. I airmailed a green with the W from 100y. WTF? I might just leave them alone for a bit and see how I play.
I have always been tempted to try the 850/950GH.
The ZZ Lite in my EYE 2S is 105g tip stiff shaft, I think. Not sure what the ZZ65s weigh.
I put ProSoft inserts and Avon Chamois grips on the IsI just now and will be playing in a game tomorrow. We'll see.