I think I have the RA extension, but even my 80mm refractor would bump the pier in certain Decs.
Brian
I am well aware that this is an issue of my own shortcomings.
I do know how to set the limits correctly. The first time I didn't know that my new scope exceeded the limits yet, and the second time I set them and then adjusted balance for a new autofocuser on my 10" Newt, and then forgot to reset.
Like I said, for idiot proofing, or at least increasing idiot resistance!