The Argonaut is an amazing breathing machine but like any regulator it can be adjusted incorrectly if one goes about it without fully understanding the big picture. Specifically, the guide mentions the screw "flush" to the body or approximately so, plus or minus one turn (and me, I would stay within .5 turn). The concern here is that if you back the orifice out more than this amount (approximately) it is still possible to adjust the lever, cracking effort etc. and all will seem well, until, there is a high demand and suddenly that demand might not be satisfied. This is because the volcano orifice is retreated too close to the internal body cavity base thus restricting flow, the soft seat will not clear the base of the body cavity sufficiently to allow full air flow. This is a very important consideration when setting up an Argonaut and must be understood, thus the warning to keep the orifice adjustment such that the screw is at or nearly flush to the body for proper (adequate volcano orifice height above the cavity base) and within the dots for best alignment of the hole in the volcano orifice body and the hose port.