Motorcycle Repair: honda cl200 1974, vacuum gages, local bike shop

Question
QUESTION: My honda cl200 run fine except when I put it in third gear then it starts to buck when I give it gas, any ideas on what's wrong?

ANSWER: You need to have the carbs sinked.This will also take the rattle out of it when you accelerate.

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QUESTION: How does one sink the carbs?

Answer
It is done with vacuum gages.You are setting the carbs so they all draw the same amount of air at any given time.This is some thing you local bike shop can help you with as it requires special tools.Also I would not put the bike into 3rd gear until you are around 40mph try it and see how it works.Some times we tend to short shift the transmission.