Need some help on the XX14i I have. Took it out to shake it down last night and I found that the scope did terrific until I got it up to zenith. At zenith last night M13 looked like it was being viewed during an earthquake. The scope really shakes back at forth at zenith so that impacts the viewing. Any ideas what would cause this and how to correct it? I'm thinking that the mirror cell may be lose (but the scope performs wonderfully until you are about 1 degree from zenith and then it freaks out) or the springs used on the primary aren't strong enough to support the weight of the scope at zenith and I may need to order stronger springs. Sorry about this, user error I'm sure and being new to a truss design I thought I would ask and hopefully solve some an issue with some help. I still don't have the intelliscope thing down and I think my azimuth encoder disc which came slightly dented in the middle hole where it goes through the bolt is the cause. I'm going to call Orion and ask for a replacement.