Yes, they sorted out the problems, but took them awhile to fix it.
The earliest SC clutches (2003) used no washers, per se, just the pack of spring washers. In 2004 they went to the ceramic washers, as "ceramic" everything (bearings, etc) was the hot stuff then. This proved to be wrong; the ceramic washers started falling apart.
In 2008 they switched to Titanium Oxide coated steel washers, (gold in color) and everyone started replacing their washers with these gold ones. The other major change that year was a totally different way to oil the supercharger bearings. The 2007 and older engines had a spray nozzle that squirted at the side of the shaft. In 2008 they went to a larger hollow in the SC shaft, and an oiler nozzle that squirted into the end of the hollow shaft, which is a much better way to oil the bearings and SC clutch washers.
They soon learned that the gold washers were no good. They are made of a brittle steel that shattered, mostly in higher boost applications. In 2009 they switched to a rough gray colored steel washer, and the consensus is that they got it right.
Bottom line is the SC in the newest skis is pretty robust. If you have a 2008 ski, you should change out the gold washers, and if you have a 2007 and earlier, you should at least change out the washers for the new steel ones. Also, a lot of people simply rebuild the SC with the newest kit (suffix 101) that has the new large inside diameter shaft and the newest washers. The other good mod is to retrofit the new (2008) style oil spray nozzle.
