I most certainly have, and continue to, encounter problems with the model that I am building at the moment, which, by the way, is my first model, the MTH Super Flying Models Piper Cub (68" Wingspan) in a number of areas. The biggest problem with the model is the instruction booklet, although there are also a few other little things, such as the fact that the pushrods do not fit the horns, the lack of space for the throttle pushrod, among many other things.