Attach pads to 4x4's and stand in place at lower end of Module #1.
Insure that 4x4's are plumb, and module is level horizontally and at proper
slope (by matching to string line).
Attach beveled cross support with screws to each 4x4 at lower end of Module #1.
This will hold cross support temporarily. Trimmers and bolts will be applied at
lower end of Module #1 after all modules are in place.
At upper end of module, place beveled cross support tightly beneath module
and screw in place. Insure 4x4's are plumb.