Hi bassists, I am a cellist/bassist and my main fiddle is now a 5-string L&C carbon fiber cello with a low F. It took about a year to shake it all out re setup and technique adjustment, and it was worth it. With a touch of amplification for pizz it does a nice job as a bass as well as provides me with a resonant full range cello. No more doubling required. The supplied F string is the D’Addario made for the NS 5-string electric cello. While I am grateful that it even exists, it is not optimal. A bit flabby and dull, esp. compared to the higher 4 strings, under both arco and pizz. I researched short scale EB flatwound E and the E string for Fender VI (close mensur/scale). Re tension, I think the EB string w/b a few pounds higher but the carbon fiber cello is quite strong and I have a robust French-style bridge, so think it w/b OK. But, the difference in cello and EB string construction may result in poor arco. Do any of you have advice or suggestions? Thanks in advance.