I have same problem with my telescope.
it didnt help to move the mirror, i could only move it backwords.
I was in touch with meade.de yesterday, and gave them some snapshot, and they said that T-adapter i use are to long to get focus.
They also recommand an 2" lock ring on telescope.
They also said they have an adittional ring for new models that make it possible to connect the EOS camera direct on telescops focus without t-adapter.
they said they would sell it for about €15 each, and i was told that they should check if i could get both for €27 so they would not be in risk to be stoped in customs with extra taxes and fees, and should mail me back today, but i never heard anything from them.
And i dont know what rings they was talking about, only that they was 2" and the additonal ring could connect direct on the cam.
Anyone know what rings they was talking about ? i have a canon EOS 60DA cam and an bresser messier 203/900 with 1.25" oculars but i can use biger ocular if lock/connection ring on telescope is 2" to