ok my way of tackling this would be padd out the other half by 2mm full width as its a stair or if its a floor dropping gradualy1mm per plank any reduction mid plank[edges equaly supported]
i would also glue the mismached planks together making shure the joint would be up to the heavy wear and tare of the stairs[at least 30%joint surface area glue contact]

heres the i need a thicknesser version


as quite a complicated and near impossible task
the only machine that is cappable off removing 2mm is a planer thicknesser
no other option is avalable
this machine is recomended from this shop as its quite near kilwining
http://www.powertoolsuk.co.uk/webcat/details.asp?ProductCode=DW733&ID=131

and they accept english money even if its from tonbridge

[quote author=billythekid  link=1140703397/15#20 date=1140791489]i moved to aberdeen last month al!!!


btk [/quote]

on the rigs then billy in the granite city