If you want affordable cartridges check out my retrofitted gsxr cartridges on my build thread. I got the retrofit and new springs done for under $500. Preload and rebound on top. Compression is accessible in the axle well but you need to remove your front wheel. If your interested email Matt Patton at
Pattonme@yahoo.com. He does the same retrofit into sv650s fz07s R3s and other 41mm forks. PM me for question or more pics.