If it was only idling with 're choke half out prior you have a few possibilities, either your tors delete still has install issues or most likely your pilot jets are still plugged up. When you pushed the choke in and it idled really high I was my likely because you were running out of fuel on that circuit and pulling air in. Pull the carbs apart, make sure the pilot and mains are cleaned out really well and reassemble carbs making sure they are both mounted on the proper sides with slides in correctly. Been down this road before and my pilot jet took forever to clean as it was so gummed up from old fuel.
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