89 aw4 4.0 and 242 with tom woods sye. Long story short, I blew up my first 242 on the freeway (bad seal ran it dry and threw a planetary), got a jy replacement and two years later it started slipping in 4wd, put a new chain on with no improvement. We figured it was a problem with the front part of the case, so we got another jy one and transferred the tom woods sye to it along with the new chain (200 miles on the chain). But now I get this sound from it that sounds like either gear chatter, chain chatter, or bad bearing? Can anyone help?