I have a 1986 D-50 with 2.6 4 wheel drive. When I had it smog checked last year the carb was idleing rich, the mech adjusted the carb, and it passed the test. When it started getting cooler it started acting up. Now when I start it I have to hold it full throttle to keep it running till it warms up. The Maccuni Sullix is alot different than a Holley or Carter and I can't tell if there is a adjustment for the choke. Any one have any ideas? I would like to put a Webber on it but with the emmision test here I can't.