Tigger, please do research on other and different treatments for this. With you being in Japan, I'm thinking there should be some really good people (some of them Dr's, maybe) that know how to get rid of this malady.
You have my prayers.
velociraptor intake; Cannella black riser; dyno tuned; black & white spikes
Cobra 3" slips (baffles in); Memphis Shades pop top sportshield; iso-driver boards
Fi2000R, ~120 mls LED lights; C&C SportTour seat; Rebel Bandit ReFlash Hog