Roberts in Indy is great to deal with. When I first bought my Canon 1D three + years ago I got it home and it wouldn't work, brand new and nothing! I called them, it was closing time, I had bought the last one they had in stock. It was Friday night and I had a job the next day and no camera. They called the next morning and said to bring the bad one in and exchange it. Somehow they got another one in that morning. I don't know how they did it but they did.
The guys at Roberts use the same gear they sell and know how it works, what will work with what and what won't work.
JS