The site is looking good I reckon.
You could try publishing the main menu in position top-nav and I think you need to display it as a list. I prefer top horizontal navigation, but its up to you.
Then you could also try publishing Joomulus in either user9 or user5. If you look at any joomla template with the get variable ?tp=1 it'll show you the available module positions.
commtechcooling.co.uk/joomla/?tp=1
You'd need to set the width and height to 720x90 for the top top position user9. And you'd have to give the x y stretch parameters to something like x=4 y=1. Try it in both module positions and pick the one you prefer. They should allow a little more room for the tags to display.
Also I don't know if you have a logo for your site, but you can replace this image
commtechcooling.co.uk/joomla/templates/t...iss3/
images/logo.png with the one I'm attaching. You may have had something else planned I'm not sure, you don't have to use it :)