Also make sure your bike is set up properly first off. Valves adjusted, Tb's synched, TPS, and learn parameters reset, Make sure only one air bleed screw on the side with greater manifold depression is open. If the tb bushes are truly that worn, I would try leaving both air bleeds closed . Seems odd a 2016 model would have worn out the pivot bushes so soon. Does the idle issue only happen when cold or does it do it even after warmed up?