I had a tiny problem with my orion delta. The bowden was not straigt and tend to get stuck on top pf the rear carriage, especially for larger prints, that uses all the area. Therefor I now created a deflector that is attached to the right arm of the rear carriage.

as this item is big as well, you have to make sure that the bowden is not stuck during the print (approx. 1h with 0.2mm layer). The bolts fit in the upper triangles. Use a small cable tie to fix the deflector.

Attribution - Creative Commons

oriondeltaseemecncdeflectorbowden