If it is only some millimeters, you may try to move the main mirror with the setting screws which are made for collimation. Unfortunately, there isn't much more to bring the MPCC closer to the mirror (if you don't want to replace the complete focuser).
If you need to get farther away from the telescope, you can add the Finetuning Rings #2958228 or #2958214 to the front of the MPCC.
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|Optical length (mm)||29 – 46|
|T-2 Part #||25Y|
|Usage||to set precise focus distance|
|Screw Type||6x M1,3 Allen wrench screws|
|Inner Diameter / Clear Aperture (mm)||mit okularseitigem T-2 Gewindeeinsatz = 38mm mit okularseitiger 52mm Ringschwalbe = 41mm|
|Outer Diameter||50,8 (2")|
|Inner Connection (lens sided)||Thread, T-2 (M42 x 0,75)|
|Outer Connection (eyepiece/-camera-sided)||Thread, Dovetail ring, T-2 (M42 x 0,75)|
|Compatible Brands||Astro T-2, Baader Planetarium|
|Type of Adapter||Extension|