[LVL ED] How do I solve this?

[Kman]

if you scroll down in the static objects tab, you'll see many times there will be a smaller version of that piece that can be use to fill gaps like that. also if you have a very small gap in the corner in-between two walls, you can use welders to cover up the gap.

edit: oh sorry, i guess i wrote that just as you were posting never mind then