Building help needed. Aligning parts.

[Sir Green Day 1]

I made an elevator with a "shaft" going all the way up.

The back side is stone foundations and opposite those are stone walls that the elevator tracks are attached to.

I want to place stone walls on both sides to enclose it. 

I need to have the 3 bottom rows empty in order to get my bear tame into and out of the elevator. 

I can't get the stone walls to attach to the sides, starting 3 rows up.

I could do this if the stone walls went all the way to the ground, but If I do that, I can't delete the walls 3 rows up or else they all disappear.

I hope I'm making sense. Lol

Edited November 4, 2019 by Sir Green Day

[Percieval 1,067]

You can’t let walls float. To help this you need to make a roof on the very top, and then go down with the walls till the point (the 3 way gap thing)