I am looking to buy a 5 string.I have a 4 string Fernandes bass that I bought brand knew back in 92,but don't know what kind of Fernandes bass it is. self taught for a few years then did not pick it up again until about 6 months ago. I play with a pick and I would like my string spacing to be as narrow as possible. How narrow of string spacing can I get with a 5 string bass? Is it 16.5 mm?or can I go closer? Also after I get my 5 string,could I get my 4 string bass string spacing adjusted to the same spacing as my 5 string bass? To get a more narrow string spacing on my 4 string wouldn't I just have to install a new bridge? I love to play chords at a very rapid pace and I am sure that a very narrow string spacing would enhance my playing very much so. I can play some bass,just don't know to much about setting them up. I play and learn alone and don't know anyone who plays bass. Hope someone can help me out.