I am using the feed reader on www.plop-assen.nl and I am very happy with it but...
I copied the module three times and would like to show them next to each other and not the way it is shown now at the bottom of the page.
In that area (user6 in the Terrantribune template from rockettheme) I am using it is possible to show a few modules (different kinds) next to each other
How can I get them next to each other?

As far as I can see you solve your issue. Correct me if I am wrong.

I am doing the exact same thing - three instances of the module next to each other.  It seems to be working, however the modules do not display the correct number of feeds.

The first one shows correctly, but the second and third sometimes show less than the number in the setting...  Any ideas how to get consistency with the number of feeds?

Danno, please provide us with a link to your site.

The site is not online yet...  I will post a link when I can share the site.