No modifications at all...and fitment was perfect. The regular non-DCT paddles fit fine if you just take time to line it up. Nothing special to do...seamless swap. All the stitching is clean as you can see in the pictures and the actual wheel has been cleaned frequently and is only 6 months old.
M235i F22: Prem.Tech.+
335 F30 MSport: Prem.Tech.NAV.+
X-335 E92: Prem.Sport.+
Audi A3: FBO.