The Corbin seat works better with the spacer. I’m still trying it out. Overall I’m definitely disappointed. The biggest issue being the forward slant of the stock seat, and to still have it with the Corbin 🙄 All I did yesterday was a series of short rides trying the height adjuster in different positions, upper and lower slots, then comparing with the stock seat in high and upper slot as per Yamaha.
I’m riding a couple hours tomorrow and that should give me a better idea how I like it.