Wouldn't you know it my old AS mount died on me before the recent solar eclipse. This replacement AVX is quieter, smoother and a LOT easier to polar align with the decent sized knobs. I swapped the polar scope but the heads on the screws that came with it were too long and prevented the cap from screwing in all the way. Used other screws, M3, closes fine now. Also like the added accessory ports. There's no built in level but that thing didn't last anyway. I had this delivered so all I can say about the shop is that the back office worked without a hitch and it was delivered in a couple of days and in good condition. Recommend this mount and David Astro.