Hi Leon. Not sure what problems you are refferring to? Structural or maintenance wise? I do not, however, have any issues with it at the moment. Except that is is running slightly hot, due to my flat getting really warm during the day. I thus have a DIY fan running while the lights are on. Evaporation is unfortunately high due to this, approx 1.5l per day, but that's it... Hope this helps? All parameters are stable, no other issues.