I am not a coder, but can understand most of the html. I read this Email on Acid article https://www.emailonacid.com/blog/article/email-development/horizontal_spacing_issues_in_outlook_2007_and_2010 as well as this one from James White - https://blog.jmwhite.co.uk/2014/03/28/solving-dpi-scaling-issues-with-html-email-in-outlook/. I downloaded the Outlook tips and tricks whitepaper from Email on Acid resources.
I have tried all the fixes, but nothing will get rid of the white space between the two nested tables that flow from two columns and look like one image to one column in mobile. The top image is just a single column image.
Only has the gap in Outlook 2010 (120 dpi), regular Outlook 2010 with no scaling is fine.
My code is attached and was exported originally from Bee Editor. Many of the Outlook fixes such as if statements and cellpadding attributes were already present.
I have hit a brick wall after two days and I am crying uncle. Any help would be really appreciated. This split image design is the basis for our nonprofit fundraising campaign so fixing this is really important. The target email client is Outlook 2010 almost exclusively.