Removing left side blocks from the forums

Go to ACP > IM Portal > Configuration and set "Enable system-wide portal header" to yes for now... this enables you to access previously set blocks in the header...
Go to ACP > IM Portal > Page Management and edit the default page and select the 3_column.tpl
On the same page keep forum-wide-blacks to yes...
submit...
Go to ACP > IM Portal > Blocks Management and select the default page and edit all blocks that has "header" as Block position and set them to left...
Go to ACP > IM Portal > Configuration and set "Enable system-wide portal header" to NO
Go to ACP > IM Portal > Page Management and edit the default page and select the 3_column.tpl
On the same page keep forum-wide-blacks to yes...
submit...
Go to ACP > IM Portal > Blocks Management and select the default page and edit all blocks that has "header" as Block position and set them to left...
Go to ACP > IM Portal > Configuration and set "Enable system-wide portal header" to NO