Hi Karen,
Please take a look at the attached for a possible solution. Internally markers divide the spline, as do Evenly segments, so you can get issues when they are coincident.
In this file I've added 50cm to the Right padding of corners to avoid the wall sections overlapping after a corner. I've changed the Evenly segment to Default, and finally I changed the Default mode to Adaptive.
I hope that helps,
Paul