Paul Germia fixed my Martin D-28 by using an old automotive feeler guage to find loose and/or broken struts and braces, found a loose strut on the soundboard, glued it back down removed the bridge put it firmly back on and gave it back to me. This removed the warp and re did the braces and bridge plate to where they fit more firmly. The old Martin was a great sounding machine before, but, now it sounds better than ever. Total time consumed, (short of the glue curing time) was about 45 minutes. I never got that kind of result from any luthier, including CF Martin Co, Nazareth PA which wanted 1600 dollars to "fix" my guitar.

The guitar is old, made in 1964 so the loose struts and bowed soundboard did not come under the heading of, "defective materials or imperfect workmanship". Still, $1600 was a bit much I think. They wanted to but on a new top (soundboard) new neck, and replace some of the Brazillian Rosewood. I kind of think that the guy who was going to do the repairs wanted the Brazilian stuff for himself. I complained to Mr. Martin himself and asked how they could justify this sort of thing when an assembled kit only cost $400.00. I got no acceptable reply and simply asked them to return the instrument.

Total cost? $00.00. Of course not everyone has a friend who loves guitars as much as Paul does.

It looks to me like the device this thread describes probably would accomplish the same thing, if one doesn't have a friend like Paul.