They arrived beautifully packaged and in mint condition. I installed them on Thursday night. I shielded the guitar and did the mod that you recommended to get all seven positions. It took me about three hours. Then I played the guitar - and played, and played, and played.
Every position sounds great.
All of the good reviews on Harmony Central are true and much, much more. I've been playing the guitar since 1964 and currently play in an eight piece band. We play mid 60's through 70's music. The name of our band is The In Transit Band and we have been together for 10 years now. Yesterday we played a Noon Time Concert in down town Pittsburgh, Pennsylvania in conjunction with a local radio station for all of the workers.