I am not familiar with you bow but what I do is I'll hit the side of the bow with my palm to hear if anything is loose you should get a solid thud. One buzz I had a hard time finding was my 2 peice bow quiver the rivets that hold the hood to the bracket has some loose metel inside the rivet I flilled them with some epoxy like a tooth filling and the noise went away. Heres another one that plagued me had the quiver off and when I smacked the bow on the side Id get a solid thud but when I shot I would get a buzz. Here it was my metal watch band. another thing to check I recently bought a wrist sling and the plastic buckle would ocasionally buzz against my riser ( a little fleece over it and it was cured.) Oh do you have silecers on your cables too. I do on mine it does work.
Good Luck