front driveshaft question

[2High4U]

when i get into 4wd and drive it makes a clunking sound when im going forward its not the hubs i already tore them apart.. i lookede at the drive shaft and (203 tcase) on the part that comes out of the tcase looks like there is a washer of some kind inbetween the u joints can anyone tell me what that is i can also lift up and wobble the shaft the yoke seems fine and the ujoints are tight..

thanks i know its a stupid question i just wanted to know what it could be because im building up my funds right now

 

[74757685k5]

it might be the CV joint at the T-case.or the out put of the T-case or in put bearing on in the diff. prolly the CV imo