I have a tabletop grill that uses the 1# bottles and got a Paul similar to the one shown at Camping World. Didn't work to we'll so I got a other one by a different manufacturer and also got some problems before I stumbled upon the solution.
I found that after hooking it up if I open the valve on the bottle too fast or too much gas will not flow and it won't light. The trick is to slowly open it up a quarter turn and that is it. It will light and the burner will be as high as it should. It hits about 600 degrees in under 5 minutes. Maybe the effect of the double regulator, ie. the regulator on the grill and the safety shutof at the valve on the tank.
I don't have a Weber Q but have a $30 Blue Rhino grille.
