I am having the exact same problem. I just posted basically the same problems. I have replaced numerous parts and nothing has changed. It still misses when it gets fully warmed up.
cap and rotor
plugs and wires
cleaned idle control
numerous bottles of techron
replaced all vacuum hoses
and it still misses when warmed up....I have to unplug my new 02 sensor, because the missing gets even worse. My air/fuelmixture is set to spec.
1987 mercedes 300E
1995 e320 conversion(hated the 300e grill)
Monochromatic Paint (Custom Blue)
Flat Badged (front)
custom "carbon fiber" console
18 inch HP EVO rims
Sold! Now I drive a Monte Carlo SS