Currently having a similar issue but with an MKV sled and XCS gimbal. Could just be a knocked about gimbal issue so I'm sending in to Greg to see if it needs shimming. If that doesn't do the trick, then I'll have to consider a different sled if I'm ever to attain proper balance when panning. Greg had mentioned that the flex in the CF post could likely be the culprit, which makes sense since it might change any time we adjust a kip handle on the post, flexing and torquing the entire rig. I'll let you know what happens and look forward to any updates you have on your end.