I bought a used Lodestar X2 and cannot bring the guider to focus on the Atik One OAG. The Lodestar is 5-6mm off focus when it is mounted with the Baader eyepiece holder that allows The Lodestar to touch the OAG base. Anyone have a solution for this? I have tried adjusting the prism to as short as i can. I believe the backfocus on the Lodestar is listed a s 12.5mm and the backfocus on the Atik GP is 7mm. Thanks for the assistance.