So, i haven't shared it until now because i was uncertain and untrusting of the Toyota dealer in Jamaica... so I went and got 2 more opinions today and all agree... My 4wd hasn't been engaging for some time now due to me landing in a pothole as 4wd was engaged (yea, yea, i know... spare me the evil looks; it was a wet, slippery uphill concrete road)
Anyhow the consensus is the transfer box and i found one for approx US$500 ran out of time to install it but will report when its done...
Here's the "new part"
This used parts place i found has EVERYTHING!! I'm pretty sure i will be able to find a direct swap set of diffs in time from them if i need after throwing on the 33" rubber.
Another small but important step towards getting this rig where i want it to be