Please do not adjust the angle of the spar!
Are we looking at the VS?
The 'angle' you are considering adjusting is designed to pickup the taper in the skin as it angles back from a skinny leading edge to a chunkier trailing edge.
If you cleco the structure together you will get a better overview. When it is all together you will get to see the geometry.
As for the ribs, the adjust & flute process will likely have moved the angle again! So re-check the angle after fluting.
Hope this helps!
Is there an EAA Chapter nearby?
VAF # 1565, builder 82841.
RV-8. Showplanes and Todd's canopy. Sam James cowl.
Aero Sport Power IO-375 & WWA 74RV.
First flight 30 August 2018
RV-14A slow build