You can use a small grinder and open the sides of your gimbal lock to allow the filter to fit. Just make sure you don't cut to much and the front falls off.
Last year I purchased this one from PolarPro, but sadly not available now. There was a few folks printing out custom parts for the XStar. Can't locate the page now.
Scott Smith has a 3D business and makes Autel parts. He has a gimbal lock thats a little different but I am not sure if it will fit over ND filters. He said he can make to order so maybe drop him a email and let him know what you want. He is pretty good at what he does and if any problems with the product he replaces the piece in question.
Autel X-Star Gimbal Lock & Lens Protector4.5 (90%) 6 votes Take care of 2 things in one with the Gimbal lock and lens protector for the Autel X-Star. Easy on and easy off with the front load design. An all in one solution to stabilize your gimbal for transport and keep your cameras lens from …
This camera lens cap and stabilizer designed to fit the Autel X-Star Drone - with a lens filter installed (it will be a little big without a filter screwed on).
Made this version to fit over a Neewer Lens Filter. (or any filter with a ~33mm OD) If you are just interested in purchasing this already printed click the link...