Cannot fault Cris for customer service at all
I really should take the scope out one night and actually do some visual work, only done it briefly once or twice between the clouds. If you don't have a diagonal, I would suggest you get one. What I did notice with my two TeleVues is that it didn't have enough back focus to achieve focus without it, only by a cm or so. Not that you'd want to do visual without one anyway, you'd have to lay on the ground to look overhead