+1 I visited the Kury tent in Sturgis this summer and they did the same fix on my adaptors. The floorboards splines mesh and tighten down now.CAPT-NEO said:Hey fellas,
the reason you're not getting enough torque on those bolts is because the two parts you're trying to mate together are touching. I had the same problem. I bought the floorboards at Daytona during bike week, brought them home, installed them and almost busted my butt the first time I stepped on them. Let’s see if I can explain what to do so you can understand. I think the adapter comes to a point and the floorboard has a recess. The point is much to long so what’s happening is they are making contact thus not allowing the bolt to tighten. The splines will NOT engage enough to keep the floorboard from rotating. I brought the parts back to the Kury tent and they told me that Kuryakyn knows about this problem but refuses to fix it for some reason. Anyway what they did to fix the situation was to take the adapter to a grinding wheel, grind off about the depth of 2 threads. This allowed the bolt to pull tight enough to allow it to engage the splines and tighten the bolt. That bolt needs to be real tight but use a 3/8th ratchet because if you use a breaker bar or 1/2 ratchet you can break the bolt.
Let me know if I can be of more assistance.