in fig6 to the extended u201c latched u201d position generally parallel to an axis a defined by the inner rocker arm 13 in the latched position of the latch member 47 a flat planar upper surface of the latch member 47 engages an adjacent lower surface 52 defined by an endwall 53 of the outer rocker arm 17 see also fig2 referring again primarily to fig3 4 and 5 the inner rocker arm 13 defines an axially extending i e generally parallel to the axis a of the rocker arm 13 bore 55 an open end of which is visible in fig3 as is best shown in fig5 although somewhat schematically an angled bore 57 is formed within and defined wholly by the inner rocker arm 13 by way of example only the angled bore 57 may be formed by drilling with the drill bit entering the inner rocker arm 13 from the circular opening 29 then proceeding until the bore 57 intersects the fulcrum surface 33 or a bore extending somewhat vertically u201c upward u201d therefrom the drill bit then continues until the resulting angled bore 57 is in open communication with the axially extending bore 55 preferably but not necessarily when the shaft 27 is inserted into the opening 29 the fit between the shaft 27 and the opening 29 is close enough and perhaps even comprises a press fit such that the shaft 27 effectively u201c seals u201d.