Make your own crossover component, see images:
#1 cut 1 more piece of Nylon/Kapton tape than the number of wires involved.
(I use uninsulated 30AWG wire wrap wire)
#2 layout the first wire to lead spacing needed
#3 cover the first wire with a piece of tape with the carrier removed
#4 repeat with the second wire
#5 complete all wires until you are finished
#6 form the wires and cut to length, I usually leave 1/10" overhang
#7 take off the protector of the first piece of tape and stick to PCB. Solder in place
#8 a sample of a simple X (crossover) component (full size)
EDIT:
If you want, you can cover the crossover component with hot glue.
Use freeze mist to cool glue down immediately.

