Hello Community,

I'm currently working on a quite complicated shape design project. So far ive managed quite well, even though im still in learning phase. But i'm facing a problem, that i cant solve:

This multi Section surface is supposed to be tangent to all connection sides basically. With the guides it works, but im having trouble with the marked sections. It keeps poppong the error message "tangent conditions of first & last section must not be perpendicular to the spine". Ive tried making my own spline, but having that many conditions and then forcing a spline doesnt really work...

What ive also noticed, is that the surface doesnt continue all the way. I have no explanation why:
 

In my desperate attempts to make it work, i tried switching sections and guides. In that case all my conditions were accepted but the surface came out with a lot of unwanted bumps and dents:
 

If anyone has an idea id be forever grateful! Thank you in advance!