PAIA diodes

Hi people! I' am making a PAIA theremin, I did not bough the kit, I just bough pieces and made a pcb myself.
The problem are diodes!! In theremax building manual (thereman.pdf) there is the reference for just 10 diodes while in my pcb there are 14 diodes!
D2 D4 D6 and D8 are missing in the manual...
The funny think is that both in the manual and in the placemente gif diode are numberet from 1 to 14, but in the manual there is no reference to D2 D4 D6 and D8...
So what to do?

Ignore Them. My manual shows a schematic listing only the diodes that are used in the circuit. Obviously the diodes not present in the list and the schematic belonged to an earlier version of this circuit, and were dropped out in subsequent redesigns.