The 960 has been flawless since installing the fuel rail...except for one little problem. The car has what I call a "vapor lock" in that it will occasionally not start after being driven a distance or a lot of stop/go driving. It takes it about 15 min to restart...unless I hold down the pedal and crank and crank. Also, it will immediately restart if I release fuel pressure at the check valve on the end of the rail. Any ideas? I don't like my mother getting caught out in it in the summer heat.