I have a 2017 and had this same issue. But the issue isn't the number of pins. It's the springs don't want to stay in place. From what I have read it's only the 2017 quads and newer that have been seeing this issue.
2017 YFZ450R XC Setup - OíNeal Racing, Leatt, 4Arm Strong, Engine Ice, ASV Inventions, Ryno Power, ODI Grips, AMSOIL, Sunstar Engineering, Braking, Acerbis Plastics, Kenda Tires, SCOTT, Peak Racing Products, RadicalX, FourWerx
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