The Crossbar used to fix each end is too loose for my liking. Use M3 bolts and nuts to secure the crossbar to each cradle.
Orientation
Print as it is, no support is needed.
BOM
4 x M3x12
4 x M3 Nuts
(6 for each if intend to fix the wiper)
The author remixed this model.
Added M3 nut trap and bolt holes to the crossbar