My new 581 Barrage decided it no longer wished to function, whatsoever. The problem seems to be related to the springs. In any event, having failed to self-fix the problem, it will soon be sent off to Benchmade, for repair.
In the interim, I decided to temporarily replace my 583SBK Barrage's hollow and cheap feeling ordinary Valox scales, with the relatively luxurious G10 and Aluminum scales, of my broken 581, until I get around to sending it to Benchmade. In doing so, if I am not mistaken, I have created a combination unavailable from Benchmade. Essentially, a 583SBK with the scales of a 581. Or a Tanto blade option for the 581. Same end product, for the most part. I like how it looks, as does my knife-sick girlfriend, which speaks volumes.
Perhaps this may one day be the 588 Barrage, assuming again, that I am correct as to the current absence of a Tanto blade option, for the 581 Barrage.
Make no mistake, however, that this combination shall be short lived, due to the superior M390 blade of the 581 serving no purpose, until I send the my broken 581 with its scales reattached, to Benchmade.