Allow ham to come to room temperature.
Remove overwrap. Place in roasting pan and pat dry with paper towels.
Remove upper rack from oven and insure there is enough room in the oven.
Preheat oven to 325.
Diagonally score ham about 1/4" deep to create diamond pattern all around the ham. Set aside.
Zest the orange, making sure to get the get the white pith. Then cut in half and juice the orange. Set aside.
Place cloves at the corners of the diamond pattern. Set aside.
In a medium pot, combine brown sugar, vinegar, Dijon, garlic powder, Worcestershire, maple syrup, Bourbon, orange juice and zest.
Heat over low heat, stirring frequently until sugar is dissolved. Remove from heat.
Generously brush ham with glaze.
Turn ham cut side down on rack.
Add 1 cup of water to bottom of pan.
Bake for about 4 hours (20 minutes per pound), brushing with glaze about every 30 minutes. If bottom of pan is dry when brushing, add another 1/2 cup of water.
Allow to rest 10 minutes before slicing.