SoM,
Here are a couple of tips on the Jazz Flats (don't think I've seen them posted here before):
- Before you put them on, wipe them down thoroughly with alcohol. They come with a fair amount of (machining?) oil, which will leave gray streaks on your fingers, and also smells somewhat unpleasant. Use a light colored cloth so you can see when it's mostly gone, and of course be careful not to kink the skinny ones - i.e., don't rub back and forth.
- The fatter ones feel a little funny for the first few days; some people describe it as 'kind of sticky'. This seems to be because of the gaps they leave between the windings (for flexibility), and probably gets better as you deposit some skin cells and oils of your own...
- They need some break in time to sound warm, rich, and mellow. I haven't tried to quantify this yet, but I'd guess it's on the order of 10-20 hours before they really settle in. Initially, they sound a bit brighter and don't have as much harmonic complexity, so don't make a snap judgement.
Bob