The forks slide easily,especially when you have them canted down a little. The notches are great for locking in at various areas as needed,but you can set the forks anywhere ,it just wont be locked in as tight altho I have never had mine to move on its on,even when not in a notch.I was looking into forks also, and thought the "Artillian" looked like a better deal than anything else out there, including models from "Everything Attachments," which have a pretty nice set up. The main difference for me is whether or not the forks could slide when using them for something like clearing brush piles and moving things other than pallets. But then there's also the question as to adjustability when thinking notched vs. infinite adjustment.
Latest and Greatest on Artillian JDQA Pallet Forks - YouTube
Construction Attachments 42" John Deere, John Deer, Quick Attach JD, Compact Pallet Forks CAL-1PFCMPSM42
The "Artillians" look like they would not be able to move on you at all while working with them, but I wondered how easy/hard it is to adjust them when you need to. Any feedback from actual experience would be helpful. I have to say that I found this forum when looking for info and advise after I decided to order a 1026R, and the information on here is invaluable. I'll do a post after I have everything and get it situated. Perhaps this question belongs on a post of it's own, but since I saw someone referencing the "Artillian," I saw it as a opportunity to ask.