Hi. I'm trying to put together a new panorama rig/kit from scratch. I had everything figured out but then I hit a brick wall. I've come to realize that the tripod head which I had my heart set on does not have panning. Here it is: http://www.bhphotovideo.com/c/search?Ntt=arca+swiss+p0&N=0&InitialSearch=yes&sts=ma&Top+Nav-Search= Sure, the clamp offers some nice rotation, however, this 'rotation' can be considered as 'panning' ONLY when it's level. Let me explain. There's a good reason why I called my panorama rig a 'kit'. I need it to be extremely versatile, letting me use only parts of it, depending on the task at hand. That is the reason I've singled out the p0 ballhead. It can function as an exceptional leveling base AND double as a full-fledged, heavy-duty tripod ballhead. There will be cases where I decide that instead of having to put the whole clumsy monstrosity together, I can get away with doing just a single-row panorama with a collared lens, such as the Nikkor 70-200/4 or the 300/4. I can mount a lens like that on the p0 ballhead directly and have the camera (D800) in the horizontal or vertical orientation. This setup would work in many cases, except that I can't use the rotation on the clamp for panning, unless the horizon happens to be in the middle of the composition. It is obvious that I need to add a rotator that goes between the tripod and the p0 ballhead. What I was able to find are these: http://shop.nodalninja.com/collections/rotators It seems that what I'm looking for are the ones listed at the bottom. However, it appears that there isn't any way of locking the rotation and there are "stops" that I absolutely do not need. I couldn't find any demonstration of the product, so I had to ask here. I need something very simple, yet extremely tough. Something that I can trust to hold the p0 ballead, a full panorama rig and my Nikon D800+grip with the 70-200/4 lens. Obviously, it does not have to come from Nodal Ninja and I do need to be able to lock the rotation. *I'm not interesting in leveling bases, unless there's one that I can cannibalize and use only the part responsible for rotation.