Funny you should ask about my Kascha uke, it's developed several problems but mostly the top is rotating due to the braces having been thinned to much and not enough support, causing severe intonation issues. The builder refused to stand by his product even claiming it was my fault due to poor humidification which I showed him was disputed by several prominent luthiers and he won't even return my emails now claiming he has no money to take the uke back and either build a new one or offer a refund. He also claims he is no longer building anymore and left the business but his website is still up and running. I won't name him just don't use any luthiers in Glasgow area of Scotland. So I'm on my own. Thankfully someone very talented is repairing it for me.