Normally I'd agree, but even if I tune the LSN lean enough that I can watch the cylinder-head temperature climb while idling, it still instantly stalls if I rev-up the engine too fast after letting it idle. A hot glowplug solves the problem, but the engine burned-out one hot glowplug within a week, so that's not a viable solution. It's not a major problem, and it might well be related to the unusually cold spring we've had this year. I won't know for sure until I get to drive the car on an 80-90°F day.