After reading Blitsie's tip on turning front spring preload in to max I decided to give it a go. Had to do it with normal allen key as bars are in the way. Well after a while the adjusters went down about 10mm in the tubes and they were still turning easily. Are they supposed to bottom out at any point ? Getting tired I wound the back till they were about 4mm dropped in tubes. Compressing them they seemed to be stiffer. Anyway play with the adjusters and did it help ? My bike feels a bit like a pogo stick when going through bumps at speed.