Are the gas grill valves in your old Weber Genesis or Summit grill stiff and hard to turn? Do they no longer lock in the Off/High/Medium/Low positions? Do they not pop back up after being pushed down?
If you answered “Yes” to any of these questions, you can probably solve the problem by cleaning and lubricating the gas valves.
This video from our companion site The Virtual Weber Bullet provides a quick tutorial on how to separate a tri-tip roast along its natural fat seam and slice each portion across the grain.