My VII has 65,000 miles on it and since around 40,000 miles the clutch splines have shown signs of wear. I changed the transmission input gear at 45K, clutch plates at 50K and finally the flywheel today at 65K. The flywheel splines had the most wear, but was the most expensive piece. I finally obtained a new one at a good price. The clutch plates would not fully disengage. They would always be somewhat bound up because the splines had offset grooves. So the poor shifting is now like new again. See attached pictures below.