I was doing some recording with the band this past weekend. We are going in a newer and "heavier" direction with our originals. The guitar player has himself a new toy- an effects pedal that detunes an entire octave. I have only 2 four-string basses, but I HAVE thought of this setup before: I have a .130 for my Ibanez SB900LE that I had used for detuning to low D in another band (this band also detunes half-step overall). I took the .130 and tuned it to low B, the .105 tuned to E, the .85 tuned to A and the .60 tuned to D on this four string. It actually worked out quite well, but as you can imagine, the intonation on anything past the 6th fret was WAY off. I am think of adopting this setup for just this bass permanatly. What I have in essence done is, convert the 4 string into a five string without the G string. I have borrowed a freind's Strobotuner and am now prepared to work on the intonation and action. I want to get some opinions, advice, and warnings from TalkBass members before I proceed...Has this been done before? Are there pitfalls I need to take heed of? Is it impossible? BTW- if this HAS been posted before, please link it because I have looked through the forums and can find no reference to it. I also want to point out that I do not own a Five-string because I cannot afford one. The only really good five-stringers tend to be EXTREMELY expesive and I will not settle for something that isn't right to my feel. This may be the poor man's way to compensate.... Thanks for you time and postings in advance!