Ps, I'd agree with Hobbsy, try a Cline regulator in preference to the Saito idea. I have a couple of them, and the only problem I have had is "mounting" them so that they are isolated from vibration. The manufacturer recommends just hanging them on the fuel line which isn't always possible if space is tight, and any vibration can lead to bubbles in the fuel due to cavitation.

Notwithstanding mounting, they do work brilliantly and there is nothing to adjust or tweak. In the model in the piccie above the tank is 6" back from the firewall (as close to CoG as I could get it) and 2.5" above the carb. Thanks to the reg, it runs consistently thru a tank and doesn't syphon when the engine is stopped. Support from the manufacturer is v good.

Anyone know if the IronBay alternative is less sensitive to vibration?

A