When you pull it out this next time, check the passages and high speed jet. I found using the fine wire from the inside of a twist tie (like you find on a loaf of bread) works well for poking through the varnish in the small passages.
Since I was dealing with a metal carb bowl layered with varnish this afternoon, I poured half a carb bowl of acetone in the bowl and sloshed it around for a few minutes. That dissolved the varnish quickly. I made sure not to get the acetone on any rubber parts including the tip of the float needle.
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