Help with gears

[bigwhite4door901]

need help! just put 4.56 gears in my hoe and now it's making a howling noise during deceleration. did everything to specs and the pattern looks perfect any tips or tricks or ideas?!?

 

[hoe]

they are setup wrong if they are howling. REdo it.

 

[bigwhite4door901]

went to tear it down first thing this morning and some how the pinion nut had backed off...? bought a new one and new crush sleeve n rebuilt now it's perfect