guys, if you will notice, this may just be a problem of quality control:
Bearings - noted to be "bad quality", they are not made by durango
Pins - some isolated cases of them falling out, pins probably not made by durango - could be because they are not consistent enough in size
Diff rings - small parts that are difficult to produce in a tolerances needed for there application, will take some ironing out of the molds to get the clearances right
Just some of the things that i have heard - again, small issues with production and outside products, not design, build, or maintenance flaws - but the latter two could be contributing to the problem
relax, it happens to all