When using a new banner in the forum there is a weird overlap with the old one. I guess I did something wrong. Does anyone have a good step-by-step instruction on how to set the forum banner properly without keeping the old one?
Ah I see, so are you trying to remove the old banner? I assume you created the old banner by adding custom code in admin > customize? You should be able to go to your current theme, click Edit CSS/HTML and delete what was added there.