Fixed Fishbone Gears (47/9 double helix). Wade-Greg-Jonas Kuehling extruder

Gears defined initially by Stoffel15 generate a small interference because the large and the small gear not have the same helix angle.
In the previous version the helix for large gear rotates 200º/47 and grows upward 5.5mm. Meanwhile the helix of small gear rotates 200º/9 and grows upward 6.25mm.

In this version helix are matched in both gears, keeping the same definition for the large gear and only changing the rotation of the helix for the small gear to (200º/9) * (6.25/5.5)

The fil