Hi There, bit of a tricky question this one but here goes- Q. My all time favourite bass neck is the Stuart Spector NS4 (a bass i already own), so i'm looking for a jazz bass neck similar to the feel of that neck. The reason i ask this strange question is I'm planning to get "Sei basses" to build me a Jazz, But over the years i have made many mistakes by buying basses with very awkward necks i.e. string spacing & width etc. What is the closest string spacing you can get on a Jazz by any company? Lull, Sadowsky & the obvious one FENDER. Do Sadowsky bass neck's have a very playable feel? Love the The graphite flea bass, but the neck is very wide and sometimes VERY difficult to play, shame that. NECKS THE MOST IMPORTANT FACTOR ON A BASS!!! Rock on!!!