As I stated earier, I've had a couple of NP ARFs & haven't had any problems. However, their instructions could be, oh, let's say, about 200% better. I've built a few kits & quite a few ARFs. Just about ALL of the cheaper ones instructions are practically nonexistant. I agree with corn2990, at the very least, let's have clear, readable , ( MAYBE IN ENGLISH) with the specs. for that particular plane. I think if ALL of us would take the time & email the sellers, we might get something done !!! If all of a sudden they would get a few thousand emails, I think they just might improve !!!