Digital Clock - Bill Bowden

here the scheme :
i want change IC 74390 to 4518 4 bit BinaryCodeDecimal counter. the last D not connected cause running until 6 step only before reset it.
D C B A Decimal
0 0 0 0 0
0 0 0 1 1
0 0 1 0 2
0 0 1 1 3
0 1 0 0 4
0 1 0 1 5
0 1 1 0 6

see ?... the D never used, keep it zero (ground).

Here the new scheme using 4518.. ups sory my file lost :(
protoboard :

to be continued.........