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I'm experiencing an issue with my CPC800 which is I can only describe as an issue with slew, mount drift or backlash: After a sucessfull PA (ASPA or 3 Star Align) I get the scope to GOTO quite accurately. I use the Celestron CrossAim 12.5mm eyepiece (CCelestron CrossAim 12.5mm Illuminated Reticle Eyepiece) to align on each star as accurately as possible and this has helped enourmously with GOTO accuracy. If the GOTO target is to east of the meridian the GOTO and slew are bang-on - tracking starts when the target is at the centre of the FOV. However, if the target is on the west the slew continues past the target. To stop this I have to press the handset button opposite of the direction of slew and then the tracking starts. I'm afraid I can't describe this any better - I wish I could post a video. Please, can any explain what is going on and perhaps suggest a solution?