I'm not running it in my shee yet because I moved and didn't bring my shee with me at first. But I will be running it this spring. Ran it in my sled this year and worked great.
I haven't ran it in my banshee yet but I do run it in my sled and dirt bike. The sled smokes less and the valves are alot easier to clean off. The valves get just as dirty but alot less effort to clean them. With the dirt bike I was able to actually drop one jet size and probaly could go one more but didn't.
I was running Vito's 7 degree key in my Banshee for about a year in a half on a stock motor till my motor blew. Went back to a 4 degree just to be safe though.