I would probably take it of and tear it down again, checking every little thing. When I strip a carb down to nothing, after cleaning I check every port using my small rubber cone nozzle air gun and seeing how much air comes out the other side. Sometimes I've had build-up down a port that just will not come out very well, I bought an assortment of longer sewing needles a long time ago and use them to scrape out anything that soaking for a day didn't get. That site where you found the videos, Mike's carburetor parts, has got a ton of info in there. Assuming yours is the brass float, shake it and make sure you don't hear sloshing. I've had to repair a pin hole on a float before because a seam started to come apart after cleaning. Another thing that can mess you up is check balls and the springs behind them. I like to check the ball diameter with a mic and compare before I drop one in, you can do the same with the accelerator pump if you have and inside bore gauge. Most carb kits nowdays are not the greatest at sticking to spec since they are trying to make a universal kit most of the time.