I think you guys were right about the jet flow. I took the carb off and gave it another once-over with the carb/choke cleaner. Any hole on that thing got a good spray. Its now holding idle in park and at the light. Naturally, the nature of the carb will function differently with a temp change (for example, it was 78 during the day yesterday and 52 at night when I took it for another spin around the block). At night, the carb wanted to stall out. I did not change a thing, and I know that happens occasionally if not regularly. Any pro-tips before I start finding the sweet spot in my adjustments? Thanks for the help so far. You are all a wealth of knowledge.