front differential binding

Hi , I had a pinion seal leak , water filled the front diff , i cleaned the most of it with brake clean + oil change 3 times after 200km interval , the front diff still has a grinding sound when 4*4 engages , the front diff had a lot of water for 2 weeks , it stated to get a rust on it ...

Four weeks ago a bunch of us made a trip down to Binghamton proving grounds in NYS. There was a modified 23 sequoia trd pro, bronco everglades, even a bronco sport and my self in a lifted 2021 willys (2inch suspension lift) . The off-roading was very mild and there is one water crossing that is...