'79 GS1000 carbs factory set too lean at startup

[KEITH KRAUSE]

I've owned a '79 GS1000EN since new. There's no "cold-blooded" issues like you describe. Not with a properly tuned/maintained motor.
Not knowing the overall condition of your bike, it sounds like the carbs a not clean. The small passages in the pilot circuit become gummed up if the bike isn't ridden enough, etc.

[Sandy]

Just been reading this thread and there seems to be a lot of over thinking going on here regarding the carbs. I've got a bone stock '79 GS1000N, except for Dyna ignition which didn't affect starting, with all original Suzuki parts in the carbs and it starts perfectly well even temps below freezing. 30 to 60 seconds warmup in summer and maybe a couple of minutes when it starts getting cold. If everything is cleaned, vacuum synced and the screws set as Chuck mentioned it should start and run., might need minor tweaking but it should run decently. One possibly could also be the little orifice at the bottom of choke reservoir in the float bowl might be plugged with debris, you mentioned it did it since new but it might be worth checking. If everything carb wise is in clean, in spec and you don't have any tight valves it should work. At least that part of it. Maybe you/us are looking in the wrong place. How healthy are the points and condensers? Coils?