baldwin buzz

[richard.ucci@att.net]

Hi People,

Tuned a Baldwin spinet ca. 70's today. Nasty buzzzz and rattle at e,f and f# 
3. Checked soundboard -no cracks; tightened soundboard buttons in back; 
nothing interfering with strings; bridge pins tight and not out of place; 
ribs good; nothing stuck in back by soundboard; pushing on bridge and 
soundboard didn't do anything. 

I could use some help on this one.

Thanks,
Rick Ucci/Ucci Piano