Check out the forum threads for front suspension. Unfortunately, there are very few easy fixes.
The stock spring rate is .90 kg/mm-50#/in. The
Racetech Spring Calculator says at your weight for class B canyon the rate should be .95-53, fairly close to stock. The question is: do you routinely bottom the forks on braking or sweeping high-speed turns? Some dive is to be expected. For street riding some softness is good, the wheel should 'float' over minor bumps such as tar strips. You could consider shimming the springs to increase preload.
You might check out a thread on the FZ1 forum on different weight fork oils. Also, there are several on this forum regarding swapping R1 parts. Swapping parts will cost about $120 for the heavier RaceTech springs and replacement oil or $200 for a Hyperpro Progressive kit. If you are not a wrencher, add for the install. Also, you might consider the 2013 forks which have preload adjustment but will ultimately give limited improvement.
