The answer is yes and no. 4 stroke have a wide torque band so being out of the perfect rpm isn't that bad. I say that as my Viper has been from 5k to 14k with the same clutch. Yeah at low altitude I couldn't run it flat out because of the rev limiter but I was only there for 2 days so I didn't care enough to go to all the trouble of changing. Now if you are like NOS-PRO

and your sled has to be perfect everywhere then yes change for the trip. But if it was me I would just deal with being about 800 rpm low.