if that is going to bother you enough to be posting about it you might as well run an ics board. All 4x2 boards are going to have the same micro-adjustment limits. What do you mean by specs of the proto? You want someone to measure all the different stance width possibilities with mounting holes perpendicular to the edges?
From what I see there is a lot of people here who already have this board in size 154. One measurement is enough because other holes are 2cm's from each other and without messing with the set back (it is twinn so i want to keep it that way) in case of re:Flex bindings it gives you stance options every 4cm (2 cm's on the side).