DigiTech HardWire V-10 Owner's Manual page 15

4.
Insert one of the V-10's chassis screws, which was removed in step 2, into one
of the aligned drilled holes in the Pedaltrain pedalboard and turn the screw,
stopping just before the screw is fully tightened. This will leave a little "wiggle"
room for aligning the three remaining holes.
5. Repeat step 4 for the remaining 3 chassis screws.
6.
Tighten each of the four screws, using proper judgement to ensure that you do
not under-tighten or over-tighten.
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