I have a 87 Jag that just won't run right. It is a total dog when cold, no throttle response. When it warms up, it will run great for a while, but the choke has to be on. Then it will start to flood, shut the choke off and it will run ok for a while. Then it will die and won't start again til it cools off. Any ideas on this puzzle?? I have put all new parts in the carb and tried all the asjustments i can for it, and still doesn't seem to work. It does hesitate when you push the throttle. You have to feather the throttle to get it going. Any help would be appreciated.