Hey Dac,I am not an expert but I am trying to restore one of these bikes.On the fuel system you should have the carbs rebuilt.The float bowls on these use a Squared o-ring that I havent been able to find.A friend of mine told me to go with round o-ring kit but be careful to choose the right diameter to stop leakage.The fuel tank should be coated,this usually destroys the paint job if its done right but the crap in the tank will come back to haunt you if it doesnt get dealt with.Hope this helps Don
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