[anthem]

Mine were cleaned about 2 years ago, just before I bought my 2002 38 Open.  I was headed away for vacation on the boat the other day and noticed excessive white smoke out of one exhaust.  I turned around and went back to the dock.  Called my mechanic.  He came out and discovered that both aftercoolers were ruptured.  One slightly and one a little more so.  I'm not looking forward to the repair bill on this!