I have purchased the 2600 and have been using it for some time. Recently I decided to add the EFW2" and the M68 OAG since the backspace distance and camera size is the same as the 6200 cameras. Everything is connected and working perfect, but I cannot get the Guide camera to focus. I need more in travel , but the camera cannot go any further into the OAG. I moved the prism closer to the camera to keep it out of the main camera sensor area. Do I need to try something else go get focus? Everything connects how it was designed, so I am surprised I cannot reach focus on the guide camera.