Down thrust increased.
I added a third washer under the aft screws (3mm) and wanted to try and figure out the angle.

Turbine re mounted and carbon rod attached

The angle is a little larger than before. The rod and ruler extend aft of the nozzle 11".

With the help of my granddaughter the distance at the ends is 2.75"

The distance at the nozzles is 1 5/8"

View from the rear