Set the GS differentlyIf your friend (or anyone else out there) gets the GS Race Stock:
Order the lock out's for the front of the plate (small oval spacer that replaces the aluminum screw shim (you see them on the front of the SL plate)). This will stiffen the front of the ski and make the shovel initiate quicker.
Regarding the SL. I am pretty sure that the pin (center of plate) on the SL plate comes in the float position not in the locked out position (all the ones (20) that I recieved where set up this way). So if you want to follow the recommendation previously posted you will need to move it. Be sure not to use a drill driver for this pin, as you will increase your likelihood of snapping it dramatically.
Every dealer who got the RS skis also recieved instructions on the plate so in theory you should be able to call your dealer and get some guidance. If you where able to buy them direct or its some other back door deal then best advice is to go to a race, look for the fastest kid on Rossi and ask him/her what's the scoop.
This plate is awesome, as are the boards.