Spark Plug Change in a Truck--How Hard Can it Be? Update#2

That is very encouraging! (Edit--or maybe not with the latest post above) I see in the comments that a guy gapped his new plugs, but I read on a Google article you don't gap iridiums. Maybe he got platinums. Do you gap them? I suppose I could check the gaps on the new to see if they are the same as the old so I don't have to do that.

So how do you actually start? Just grab one of those square things (coil heat sink?) and twist a little to get it off and there's the plug?