I understand that the float on these carbs are not adjustable by the general public. I have a way to adjust them, which I will not publish, but if you don't understand what you are doing and how a carb is built and works, it can result in purchasing new parts and creating a bigger headache. One thing that you can try is to make sure that the seat is fully seated in the carb body, they will stop a few thousands before reaching the bottom of the seat cavity. You stated that you installed the seat wrong and had to remove it. You may have damaged it, as these are designed as a single use part. I don't know what procedure you used to removed or install the seat, but I have a special tool to make sure it is done properly. Sometimes you need to replace the float also. I am not saying that the way you did things is incorrect, but being that I get paid good money to make sure things are done right and the customer is happy, I set my standards higher than the average guy or gal. If I make a mistake on one unit, it will take twenty or more perfect fixes to get my reputation back. Look around, the number of bad reviews on any site far exceed the number of reviews by those who had their problem fixed the first time.