Has anyone tried to put the Leo Vince GP Corsa Slip-On exhaust onto their 2012 (or earlier) bike? They list it is good on 2013-2016.

Hello, Background: I purchased the bike with whatever existing mods, including what I was told is a full exhaust upgrade (not a slip on) Leo Vince. I see a small leak (black colored matter) between what I think is called the "mid-pipe" and muffler. It builds up and I clean it periodically as...