You had quite a few people testing your VTC sprockets for so many miles and so much time that it makes it difficult to take Ash over you in this one. Ash does talk/write a good one with pretty pictures (which I have to thank him for since it helps explain how the timing advance works for me).
I just realized, you really like springs: -VTC springs -goose honk killer (stronger recirc valve springs) -ATI damper (can you call that a spring?) -Ferrea dual coil valve springs diagram: performance.com/images/Ferrea_Z32_dualvalvespringsetup.JP G>