I recently bought a Fender Fullerton Ukulele bass, and while I love playing it, I hate the nickel wrapped nylon strings that came with it. Too much string noise when fretting and sliding. Have tried Fast fret with limited results. I see Kala offers flatwound Ubass strings but the disclaimer says they're only for Kala U-basses. They're pretty pricey, so wondered if anyone has thoughts on smoother strings for my Fender Uke bass. Won't do the "rubber" kind either. The Fender is 20.5 inch scale, which is same as the Kala flatwounds. And maybe the nut and saddle will only accept the 45-105 gauge strings that came with it? Would appreciate any thoughts from the uke bass players out there! Thanks!