I was wondering if some one can tell me why my telescope suddenly stops. I have a 18" dob with Argo Navis and gen1 Servocat and this is the first time this has happened. Every time I use the goto it stops suddenly, every time it moves on both axis it also stops. One axis at a time in jog seems alright but as soon as I up the speed or use both axis it stops?? Any advice would be greatly appreciated. Thanks.