I cleaned the trigger points and put them back in. No change in performance. There was some wear on one of the two metal prongs on the underside of the trigger points. At least 1/32 " is worn away. Could this be the problem? I do not want to spend $200 on new trigger points and then find out they were not the problem. Also, my spark plugs do not have that top metal cylindrical piece screwed on, they just have the threaded top when you take the plug connector off. I never saw a car before that was like this. Shouldn't that screw-on top be attached? Thanks -Mike