Is there a way to align columns to walls ?

Loving this asset so far, but just wanted to ask if its Is there a way to align columns to walls (without extending, though that's what il do if there isnt an option) or are the columns intended to be symmetrical pieces? Id ideally like to have seamless walls in some straight sections (ie.  The columns would be the same shape as the walls), but currently only some of the columns are aligned with the walls as they are rotated the same direction.

Thanks, any help much appreciated!