The forum provides an attachment option when you make a post (though it can be hard to spot).
When posting/replying, look above the text box for the 'Options' tab and inside of it is a button to upload a file attachment.
Anyway, I downloaded your template and...I can't produce the problem. Sorry.
I published the template, opened a new blank form, filled in the three boxes and noted that the fields below auto-displayed correctly.
I saved the form, reopened it, and it all still looked the same.
The only times I've had 'space' issues is when retrieving data from a secondary datasource that is a database and the values get 'padded' with spaces to the size of the field.