[redeye64 (Paul)]

Have just bought a Svbony SV503 102 scope and a SV193 reducer, when attached to a nikon d5300 l can't get focus - it's too long. The reducer is able to have the back half unscrewed which then allows proper focus but is considerably shorter than the 55mm back focus. Will this make a difference i.e. is the whole point of its "flattening" properties now out the window?

*The reducer has a 48mm flange where the nikon is m42 so l'm using a narrow adapter but even holding the camera face directly to the reducer it still is not reaching focus