You need to check the setup of your string action, setting right bridge and neck. Probably if the buzz is too loud is because you neck need more tension.
The rule is simple, clockwise truss rod you made you bass action lower, decreasing the fingerboard tension, counterclockwise you increase the tension and your strings will become much higher from the fingerboard. But CAREFUL the truss rod is easy to use BAD and hard to use GOOD. You need to keep in mind that truss rod need to be used in small turn every time, not much the half turn each time, PLUS the buzz sound can depend also from your bridge setting. Usually when you find the right setting on your bridge you need to set the action just by truss rod because the weather can change the fingerboard action in different way, just because is the wood nature :-)
Cheers. Enrico
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