Pat:
I followed the recipe set out by Chris pretty much exactly except that I cooked a 12.6# shank half instead of a whole ham (same brand as Chris used by the way). It cooked from 10:30a to 2:00p with a lid temp at a pretty constant 350 deg. to get an internal reading of 158 deg.
My son suggested trimming down the excess fat layer later and putting the remaining ham back on and re-glazing. I did that and it had no ill effect on the ham and each slice then had a nice glaze layer without too much fat in between. Next time I may additionally trim the ham some just before glazing and re score it to make sure each slice has a good glaze portion. The Gentleman Jack glaze is a winner. HTH