I just spent about an hour trying to replicate an elusive bug with the Uber's dual buttons, but I was unable to replicate it. I have seen it happen before albeit it is rare, but we don't yet know when and why it occurs. There is a support meeting this week and for much of the time, we'll be using dual buttons to see if we can figure it out, then the programmer can isolate and fix it hopefully before Christmas. Because it very rarely happens, I don't expect it would be a problem if you use dual buttons, but any players using this feature should report anything they find. Reports should include exactly what settings you were using, exactly what happened, and when. Without precise information, it is very difficult to isolate the problem and relevant parts of the program.