I have the Paradisea + and leave mine on 24/7 for almost a year now. I've never had a problem like you describe, even when new.
Congratulations on the Havana. I just read a review of it on Positive Feedback and the reviewer there preferred it to the Wavelength Cosecant V3.
Congratulations on the Havana. I just read a review of it on Positive Feedback and the reviewer there preferred it to the Wavelength Cosecant V3.