Re: How to remove space between header and main body
If you're some revision of Tiki 3, try templates/tiki-site_header.tpl. The Coelesce theme has its own version of this file, in templates/styles/coelesce/, but I don't know if you're using any custom templates for your theme. In Tiki 4, the file that has that conditional comment is templates/tiki-site_header_top_end.tpl.
-- Gary