My 85 280SE German Model stalls when the engine is warm. It will start but is hard and requires feathering throttle to bring RPM's up. Can't trust it because it doesn't do it all the time. Starts and runs fine when cold. It recently has had a tune up with new plugs, wires, cap, valve adjustment, fuel pump and filters. Also new complete s.s. exhaust system. I'm in the Bethesda, MD area and use a local guy that specializes in older German models. He says he will either fix it or retire! Gotta love that attitude!! Just trying to help him out. Any ideas out there?