JD 425 hydraulics not happy

My JD 425 has 3804 hours on it. Most of the time she runs just fine... however... I went to use the loader and it wouldn't raise, tip, etc... Checked the hydraulic fluid and it was extremely low. So I went to the local deere dealer and got some and filled her up. Now the bucket will raise and lower, but it's VERY choppy. I have moved the tractor back and forth to try to get the fluid into the hydraulics. It's better, but not happy. Any insight, ideas, etc would be greatly appreciated.
Here is a link to a video - I tried to upload, but it's not allowed.
https://photos.app.goo.gl/4i8Bj4quCgDswBjL8

Thanks
Ken