Sidewinder X1 V4 Hemera Mount

Hemera mount for a Sidewinder X1 - there's a specific assembly order.

Uses Pem inserts into the plastic in 8 locations (see *pems pic):
- PemLabel00 is from a batch I bought years back.
- Use a 4mm drill to clean out where the Pem goes, about 1-2mm deep.
- Use a straight soldering iron to *gently* sink the Pem into the
plastic until it's flush.
- Use a long 3mm screw to make sure the Pem is straight. Use the
soldering iron to adjust things.
- Clean out the plastic from the path for the screw.

00, 01, 02: Using M3-12mm socket head screws with washers (double on the
bottom screw), attach the bottom section to the carriage.

motors: Note the surfaces that will mate to the Hemera.

03, 04: Mount the Hemera per the instructions.

05, 06: Mount the top assembly to the base.

07: Mount the PCB to the top. NOTE I've noticed that the heater
connector on the PCB gets badly munched when you're not careful
doing the disconnect. Found th