Yes it is CarFest GTG
Taak have been resolved at rear end (Rear Diff/gucha).
Vehicle is running fine and it was fine even before. However, I wanted to have vehicle free of every noice etc therefore i went to mechanic.
Now I have asked mechanic who told me to drive vehicle with peace of mind. as it wont effect any thing. Further, mechanic told me that he will open its 4x4 gear (whole speed gear will come down for that) and change its bearing and adjust play in 4x4 gear. Than vehicle will be free from every TAAK TUUK.
Insha'Allah
Labour will be 8k and parts replacement will be extra cost. I assume 20k ka bill bana hi dien gain ye duniya waley. 
Hence, I took a chill pill for sometime.