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the strange thing I found was in daylight I could focus easily.
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This most likely indicates you don't have enough inward focus travel. Objects which are close create a focal plane further away from the mirror; objects at infinity move the focal zone closer to the mirror. The difference might only be a few mm. You might be able to squeeze a few drops of inward travel by remodelling the focuser; but sadly most people appear to need to move the primary mirror up the tube a cm or two.
SCT telescopes do not have this issue; they have sufficient travel for almost anything.
Regards,
Tony Barry