Lack of sustain

[LouSiffer]

Maybe check for a fret pulling out of the board? -Lou

[LouSiffer]

Also, this may be a stretch, but try flipping the B and E string block around on the locking nut and verify that the nut is not loose. I thought I read somewhere that someone had a similar problem and frets checked out okay. The string angle coming out of the nut was off and caused some oddities. It doesnt seem possible logically ,but, I thought someone had a well written explanation on how this happens. I am still thinking you may have a fret pulling up on the B and E side.-Lou

[Argos]

If you've raised the action a bit, and the strings sound fine open but not fretted, it is almost certainly a problem at either the nut or the saddle. A fret problem should be easy to rule out by an action adjustment.

[Cliff]

Hey guys,
Thanks again for the input. I got the guitar pleked over the Christmas holidays, and had a brass sustain block installled. Ideally, I'd I've done this one at a time so I could determine the benefit of each separately.
Anyway, the problem is alleviated somewhat, but not entirely fixed. The action is as low as it was before, if not a touch lower, and I can pull up on the bar without it killing the notes. Sustain on the b string 15th fret is much better, but still not as much as I'd ideally like.