There was a discussion a while back about square drive shafts and the high coeff of friction of dry steel on steel. Specifically, how it related to my series of broken transmissions that resulted from bent springs and the axle moving forward rapidly while under torque load. There were several suggestions for various lubrication options, but some of the "paint on" dry lubes discussed in this thread look great but I have no source? Any ideas or other options? Something that will hold up more than one or 2 trips would be nice. Some day I'll order a HAD, but I just can't afford it right now (though it would undoubtedly be better than wasting another transmission... ) and I like the "can't hurt it" square shafts... Plus, I like that I built them myself along with everything else on my truck.