I use Arca Swiss products, and I feel as if I have rarely, if ever, been disappointed when purchasing a product from them. However, I just (tonight) received a second-hand Rotaslide which was the backup slider in a studio, and is essentially new (never really used). I have an AS 6x9 M-Line which I want to use it on, and after I mounted it, I found that the Rotaslide is extremely hard to slide! I mean, hard enough that if you don't have a studio stand and are using a tripod, the action of trying to slide it would probably change your framing a tiny bit as it is really twisting on the format frames and rail carriers...
Now, my question is, is this just new-product, tight tolerances? And I just need to slide it back and forth (a few hundred times...) to loosen it up a bit? What I mean is, is this normal?
I used a Phase One sliding back before, and it was just easy as hell to roll back and forth compared to the Arca...
Any input/feedback would be much appreciated.