Going back to the original post - the V2 algorithm in the Bricasti may well be the answer here. The V2 uses the modulated reverb tail of the classic Lexicon units (224, 480 and all the offshoots). If your unit was made before the addition of the V2, contact Bricasti and they'll send you the update chips, which are very simple to install yourself. I believe it's free for the registered owner but you'll need to check with Bricasti to be sure. But V2 does the classic Lexicon motion in the tail that so many of us love. And V2 works in addition to the original Bricasti algorithm, so you don't lose anything.