Hi Spokane Archi-Gal,
Composite junctions are a known 'issue' with ArchiCAD. It often takes a number of tricks to make things join up properly - including multiple versions of a wall with different skins and/or different layer intersection priorities and/or at worst case using the patch tool to just force an acceptable presentation via 2D over-drafting.
What you've shown should work out better than your screenshot before tricks, though. Can you press F7 (show reference line toggle) and post another screenshot?
Might be easier to help offline. PM me if you want to talk on the phone since I'm nearby. We could schedule some training time together.
Cheers,
Karl
AC 28 USA and earlier • macOS Sequoia 15.3, MacBook Pro M2 Max 12CPU/30GPU cores, 32GB
One of the forum moderators