So on the 29 there is a silencing block in the headstock where the front of the air box connects .
Does it make alot of difference ? My frame doesnt have one

I dont think I have this block either, im assuming it lies on the rubber matting as theres a shape for it there. Dont know if it can be bought or what its made of. Does anyone have one they can bung a picture up of? I would of thought its just some foam maybe lightly oiiled. Not sure of any problems it may cause..

I emailed Graeme France and he has used ones in stock , so gonna order one when i get back from holiday.
Presume they're there for a reason .