Outer Limits 4x4 Board

Hey guys. Can anyone help me. My zook makes a terriblle clunking sound (like gears jumping) when under pressure. e.g. driving up steep hills or even when taking of hard in 2wd. its been getting worse so iv'e pulled the transfer out and pulled it apart but it seems to be fine except for the chain being lose but i was told this is normal as there is no tensioner in the case. should i start pulling out the gearbox or could it be something else...When driving normally it doesn't make any weird noises at all.

Cheers

its not the driveshaft about to go???

could be the jack shaft unis?

they are non greasable from factory and can fuck out

Thanks
i'll check it out tonight. How can you tell if they're stuffed. They seemed alright when i pulled them out but i didn't look at them too closely.

try reading this:
http://www.outerlimits4x4.com/PHP_Modul ... light=diff

short story - it was ignition leads =)