Did he have it dyno'd? The thing with Weber's is that although you can give them a vague tune on the bench, that will allow you to start and drive around, unless you give them a run-up with all the gadgets attached, you're only kidding yourself about the tune. A good set-up by someone competent (as opposed to many establishmens these days who if it doesn't have a computer attached, they start spinning in circles, flapping like a chook), and you won't have to touch it again. My cars never have a problem starting, be it 40 degrees, or as happened last year, -8 degrees. It's one of those things that if you do it properly, spend the money, you'll be rewarded by endless amounts of induction noise, and spend your time looking for tunnels to drive through. :)