You put a gen 4030 in there? I am toying with the idea of modifying a 16523 to 16520 by repurposing the movement and the midcase... Sent from my iPad using Tapatalk
Thats because you have them too close to the flame/ and or leave it to long. It is easy to verdo it. I did it with numbers down, but very briefly. Its hard to control the process exactly so need plenty of spares