Has anyone had any experience with the stock drive shafts failing? I mean actual experience yourself. After 3 times through the Rubicon Trail and a 7 day trip through Baja, driving the Unlimited Rubi from Sacramento, thru Baja, to Yuma and back I haven't. However 3 or 4 more trips thru the Rubicon, Barret Lake, Sierra Trek etc are planned this summer and I don't want to find out the hard way. I have some good, strong unused CV joint shafts left from selling my previous ride and was thinking of building some stronger shafts with them for the JK. Waste of time and money or prudent move?