You really need to soak those jets and if they are really bad, flat out replace them. they will have a numbr on them indicating what size they are. I have been able to clean about 95% of the jets that I have seen though. Make sure you do not attempt using a drill bit on that pilot jet. It is very sensitive to size changes. In addition, it's not always just the jets that are clogged. It can be the passageways that the jets are passing fuel to. Carbs passage ways are best cleaned with compressed air.
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