Going back to 3 flipper clutch is a backward step when other makes are going to 5 it seems design has gone wrong somewhere.I think the dr pulley hit clutch would cure it plus lighter rollers.Julian

Suzuki have now posted a bulletin to all suzuki dealers in the UK telling them what parts are needed to ordered from them to fix the juddering and vibrating on the Burgman 400 K8 It will be done under the warranty on the K8
My bike is now at my local suzuki dealer being put right
Good luck everyone and let us know how you get on
I will let you know the outcome of my bike when i get it back middle of next week

...........GOT MY BIKE BACK..........
Bike seems much better now.............................Only time will tell i supose.

Here's a list of parts replaced with part numbers too:-

09407-14403-000 CLAMP
11371-05H20-000 COVER............. ...CLUTCH OUTER
11380-05H40-000 DUCT
11382-05H30-000 CUSHION
11383-05H40-000 HOSE ...................BELT COOLING DUCT
11384-05H40-000 CLAMP
11486-05H00-000 CUSHION......COVER NO.1
11487-05H00-000 CUSHION......COVER NO.2
11488-05H00-000 CUSHION......COVER NO.3
11489-05H00-000 CUSHION......COVER NO.4
11491-05H00-000 CUSHION......COVER NO.5
11492-05H00-000 CUSHION......COVER NO.6
17851-05H10-000 HOSE .................. RADIATOR INLET

Hope this will help you all.

Let us know how you all get on.