sorry it took awhile to reply right.... crap pic but the induction hose made access limited... border="0" class="linked-image" /> border="0" alt="" /> the nut is just a locking nut its the black bit that will adjust the weight of the pedal.... clockwise adds weight anti-clockwise reduces weight as far as i can remember but what ever you do ensure the locking nut is done back up afterwards style="vertical-align:middle" emoid=":D" border="0" alt="biggrin.gif" /> hope this helps