I have had the plugs, wires, and the valve cover gasket replaced.
The little tip is the thing that just completely pulls apart. When I took it out the first time it took a bit of effort to pull out and when it did it left the tip inside the plug well.. in fact it has done that ever since; always leavin' that frickin thing in there on all the cylinders..
I have tried everything to get the wire to stay down.. it will stay down at idle, but when you get an type of increase in throttle it just pushes up.
And you will all be happy to know that now it is missing on two cylinders just about constantly... I have resorted to rigging a piece of wood rapped in rubber on top of all the plugs so they can't pop, surprisingly it works great..
Maybe it's time to go car shopping again
