Not trying to spam, but we use one piece necks with a ratio of 10% carbon fiber to 90% maple - no trussrod, no issues. Ever. It's glorious. Tonally, it's great, too - more sustain, absolutely no dead spots ever, more even response from string to string...
I left my bass in our van the last two weeks (temps hovering around 1F certain nights), got on stage on Saturday still in tune.
Hey! what's up man! we played with you in Brooklyn at Hank's.