I mounted a Rivco bracket and peg to my 2015 Rt Ltd. I would like to switch to a Kuryakyn Widow Peg, but I am not sure which mounting post I need. The techs at Kuryakyn don't know. The Rivco bracket has a 3/8 hole, so I need a Kuryakyn post that mounts with a 3/8 bolt. Has anyone mounted the Widow pegs? Please let me know how you mounted the Kuryakyn pegs. Thanks!