Hold CTRL and V together, drag the manipulator x arrow with RMB held down and drag to the lateral line of verts (left edge) realease keys, pivot is now where it should be. Then hold down X key and 'snap' model to grid....happy days. You dont need to use or hold MMB down to do this...same as you dont need to use the insert key....Rum? some one say Rum time.........exits stage left

cheers bullet

P.S make sure "Retain component spacing" is on