RE: YS-FZ 70
Me thinks there is confusion here between a YS 63s and a YS 63FZ, where there are two different locations for the regulators. The YS 70 regulator is on the back near the carb (the HSN threads its way into the carb sort of through the new regulator mount). The new regulator is not repeat not adjustable, it is fixed internally. So the YS70 is a totally different configuration from the YS 63's.