unable to edit any marketing emails

We are having a an issue where the email editing function is adding additional line spaces to our marketing emails and it will not let us remove them...how do we fix this?

We tried everything, backspace, delete, and looked at source code....please help we have emails that urgently need to be scheduled and we cannot even get them created.

Your table height is set to 2,652px. This is forcing everything to fit evenly spaced within such a large area. Please set your table height to 652px which is smaller than the area needed, and all of the contents will snug up and eliminate extra spacing.