<html> Terry,   As Ron says, laying the piano on it's side may be needed. Also, I had experience with an extremely hard-to-hear buzz (pretty much only showed up on recording) SD-10 that turned out to be a metal filing hanging down from the plate.   As far as rib gluing goes, don't forget your vacuum cleaner. If you adjust (permanently) the tip of a crevice tool, you can make it fit into the 90° formed between the rib and the board. Touch the crevice tool tip to a grinder, on both sides, as if sharpening a lathe gouge. Feed glue onto the other side of the rib while applying suction to near side, and pull the glue into the crack. I would use thinned wood glue. Fun, noisy, and you can think of all kinds of crude puns as you work. Later, Guy At 04:38 AM 11/6/2003 -0500, you wrote: <blockquote type=cite class=cite cite>I might need = to glue a buzzing rib today on a Yamaha GH1. If the buzz source is a rib, the rib is not loose enough to insert anything between the rib and the panel. The only thing I can think of doing would be to wick some thin CA in between the rib top and panel bottom. But how in the world can that be done on a grand in a home with a nice floor without flipping it over? Any ideas? Thanks.   This is my IRATE customer from last week. I am going to take Ron N.'s advise and exhaust the possibility of a penny or paper clip on the panel first (I've got my lights and mirrors and search-sticks). And believe it or not, she can't be there again - YIKES!   Terry Farrell</blockquote></html>