How many slabs of St. Louis spare ribs

Hi hows everyone, first time reader and writter. I just upgraded from a cheap $50 smoker to the WSM 22 inch. On my cheap unit I was able to get 4 slabs to fit using a 45 degree bent inverted turkey roaster (with the slabs trimmed and cut in half. I could have possibly added more meat to the bottom rack, but the smoker did not have intake or exhaust adjustments so the temp was impossible to control. I was wondering how many slabs should I be able to cook on the new WSM 22 inch?

Thanks,
Dex

Chris did 6 slabs just on the top rack, so I would say you could potentially do 12 if you're really hungry for some ribs..take a look..

Chris' rib test

Thank you.