i have a 2005 sportsman 500 that has a really messed up front differential unit. i buried it deep in canal muck a few weeks ago. the front end would lock up on me as i riding it back off the trial once we got it free. pulled the plug when i got her home and muddy water ran out. commence tear down. once the diff was out i took it apart and it was caked with mud. and i mean caked. my question is is it rebuildable? i’ve checked ebay and holy hell. very pricey for an 05. are they’re other diff that will fit this application that aren’t so expensive ? thanks in advance.