Help - Grease able Pivot Shafts

In vehicles that got little to no maintenance, The tapered holes in the K members got wollered out. If the taper doesn't fit and stop the shaft from letting all the threads out the nutted side.... you would run out of threads. Seems I remember another issue with the quality of the nuts provided too. Threads stripped out ?
As for someone elses "what holds the lower arms in place" question... From what I've read, adjustable strut rods are required to draw and hold the lower arms position.