My transfer case is leaking (I think that sounds normal for a 30 yr old fj40) and I am (hopefully) going to remove / rebuild it. Where is a good place to get a rebuid kit? How extensive is the job tech & hours wise? Any red flags I should look for while I am in there or as I open it? Any tips for someone trying this (manual does not say much) And lastly - is there any way possible to remove the transfer case and still drive the thing? ( in case the job takes me weeks instead of hours / days)