The new frame in my 2013 rig has the whole NVH thing in it. It makes bevel box oil changes more difficult because of the bracing in the area of the drain plug. The dealer who did the work thought my original bevel box felt rough when turned by hand and replaced it with a unit he felt was better.
I have to admit that with the NHV mod, the different bevel box and a Super Max pulley running a looser drive belt, things are much quieter. Unfortunately, all those things happened at the same time so I cannot testify to the overall effectiveness of any one single change.
This took place at 7,800 miles and I am now at 14,200 miles with no complaints.
Let me end this with a positive endorsement fo the Fair Bourne Carriage wind screen as a worthwhile mod. It cuts cockpit turbulence and you look through the windscreen with both eyes rather than looking through it with one eye and over it with the other as I do with the stock set up.
