Today I've acquired a Bogart blackstone fretless. Haven't tried on the big amp yet, but through the audio interface it sure kills. The previous owner had no idea about setup and regularly brought it to a luthier even for string changes. Now, the action on this is quite high and it starts mostly at the higher frets. The neck has some relief but not enough to be the problem. The saddles are already bottomed out; I've had this problem with similar bridges before, mainly due to the string grooves on the saddles not being large enough. So the only options I can think of are either filing down the saddles, or shimming the neck. I'd rather do the first one, since even if I file too much I can still compensate using the adjustements on the bridge, and I'd like not to take the neck off at all. The input jack crackles a bit also; it seems this thing is going to need more repairs than anticipated. But who cares, for what I've paid for it it's still a steal.