Rookie Question Rear axle squeek

i am hearing a sqeeking sound coming from my rear end. just when i roll it forward by hand. or put pressure on the tailgate. could it be the suspension or axle or am i just worrying over nothing. i have added a leaf in the rear. let me know what u think? hopefully i am just worrying over nothing

 

yes, it seams like it really happpens when i move it forward by hand.

 

i have had it in the mud once. but not bad but just for a min. and it is clean under there. what do you think is going on?

 

i put a drive-shaft carrier bearing drop kit on it also

 

i cant remember the psi but they are tightened

 

here is another stupid question, could it be the breaks?

 

bump

 

just noticed one of my leafs is crooked, could that cause it? i pinpointed the problem to the leafs. but is it worth straightening it out. it is still in the bracket