First, let me preface my post by saying that I am legally blind and can read only a few letters of a word at a time. I bought the K3, P3, and the KPA500 KITS at the same time to save postage costs to Canada. I built the KPA500 first and had no problems. Second was the P3 kit that was even easier. Then came the K3. In all cases, there were concise assembly instructions and very detailed photos to make sure the builder understands what is expected. The K3 however, has many small connectors and I had trouble seeing where they mated. I had some bent pins and misalligned shells but they were analyzed by Elecrafts customer service guru, Dale Farmer. Everything now works as it should and I am busy learning the many features of the "K line".