Mark-
I'll make the assumption that "kitchens" appearing in the top 10 keyword searches was in Google webmaster Tools, not in your analytics data. Drill deeper and you'll see that your SERP is 30+.
For Playtypus Wine Tours our top KW for impressions (6500) in GWT is platypus - but we come up on page 4 for that term. For what matters (platypus tours) we're #2. So check your average position. Then check your analytics data to see what KWs are coming in, how sticky you are (your bounce rate) and go from there.
Geo target all your local neighbor hoods - have pages that are optimized for "name of suburb kitchens" or "name of neighborhood kitchens" e.g. glenwood kitchen remodeling, northtown kitchen remodeling, etc.
Chas