rear end woes

Howdy gang.. Been a long time since I've checked in... Spent some time with the Dart today, and frankly im a bit frustrated....

So... The Dart has only seen partial action the last few seasons because of rear end troubles. I had a 741 case 3:91 chunk in it... the pinion bearing went bad and I wound up with all kinds of noise and issues.. I still drove the car, as I didnt have the money to deal with it. Plus the 741 is the weakest of the three different chunks, and I was holding out for a different one... Last season I got a 742 center with aftermarket Richmond 3:73's and what appears to be a spool style posi (its not the typical Mopar clutch style so call it posi instead of sure grip)... I got the chunk from a guy who has a pretty monstered up 72 Dart that he races. He had this center section redone and it had very little time on it, and they he went in a different direction, so he no longer had a use for it.... seemed like a good thing for me..

Here is the problem.. it whines like crazy.. most notably on the decel side.. now some of my friends are telling me that Richmonds are notorious for whining... Ive looked on the web and my research shows me that there are def two camps... the Richmonds are noisy and whine camp, and the 'your gears werent set up properly / the shop screwed them up / or they werent broken in properly... I suspect i will get much the same divide or response here as well..

If it is a case of improper set up.. theres no telling really how much time were on the gears when i got them.. they looked pretty darn new to me tho... and if the break in procedures (of which i wasnt previously aware there were any) werent followed, its most likely the damage is already done.. much like a tire that wears uneven due to poor alignment, the alignment can be fixed but the tire will still be messed up.. So i guess rather than just let the Dart sit another season, I am just going to drive it and get back to enjoying the car.. I really have missed it..

My question is... has anyone else experienced noisy Richmond gears? or any other brand for that matter....