This turned out pretty good.Cooked at 400 indirect raised grid.Basted twice in a thirty minute time frame.
After 30 minutes of cooking I closed the daisy to 1/8 inch opening and the bottom vent to a 1/4 inch opening and cooked till it was 165 degrees.The temp will drop to around 275 at this time but don't worry.
The marinade was .
4 cloves garlic mashed
1/2 cup olive oil
1/4cup Marsala wine
4 tablespoons rosemary
juice of one lemon
Marinate for two hours or more.