I'm trying to merge the bottom edge of a loft with the top edge of a vertical base. The loft's reference curve is an edge of said vertical base (I'll attach file and photo so you can see more clearly what I mean). I tried turning off the edge view to see if it was just a weird rendering issue, but it's not. The surfaces won't close. How do I turn this into one hollow piece without weird gaps along the seam between the lofts and the bosses?