Just to revive a yr old thread, I thought Id share my Star Kit experience after two full seasons.
XTX skid, and was all stock. Sent my rear suspension, and ski shocks to Star for a full rebuild. They sent them back w the Star Relocate. I installed all onto my skid, and was instantly impressed with both the rear staying up where it should, and the totally improved handling of the skid suspension on those nasty stutters after a full day of beat down trails. After two yrs and around 3000 kms..they still look and feel great.
As for the cups on the front skid falling out when installing skid into tunnel...I simply wrap electrical tape around the ends, so as not to cover bolts holes, slide skid in with the two torsion spring hooks and wheels off the rails, then peel tape off caps after bolting in. 10 min install. I've found, like others, that removing those two wheels really makes the skid slide in smoothly.
If any Nytro rider here is wondering about the Star Kit, imho, get it. Really transforms the rear.