tri-tip tri tip

I went to Costco to get a Tri-Tip roast. They didn't have any so I bought their Tri-Tip "steaks / strips". Using this link http://www.virtualweberbullet.com/tritip1.html, which calls for a roast, I seasoned them, brought my WSM to 350 degrees & tossed them on. Note: the seasoning called for...