nutrocker

HI ,

Thanks for reply.The small 3 grubscrews i have adjusted and distant object now centered but on this polarscope which IS fitted externally i am beink told to adjust a further 6 or 3 screws.My worry is,if i adjust the 3 smaller screws the screws might end up just falling inside the casing. i suppose you  really have to have the polarscope in front of you as it seems to need calibrating in a different way to others ( which i have done with no problem ) I still appreciate the help i am getting so please let me know if you think you may have the answer.