chillo how heavy are you?
i had this weave or pump at high speed so if you weigh over 85 kg(dry) then go for the new spring on the rear it worked for me and cost very little

I have a 999S biposto spring (6Kg I think) which is too hard for the road - probably OK for track. Like new, £30 only!!:oink::oink::oink:

Nathan

i'm 80kgs ish
i was going to dial in a bit of compression to see if that helps then i might give the new spring a go

chillo