Why are my best Pics coming from a KIT LENS?

Figure 1: Shot with my smc Pentax 18-55mm f3.5-6.2 kit lens.

It’s the strangest thing.  For months it seems I can’t take a sharp shot.  Recently I dug the old kit lens out of the bag (cheapest thing Pentax ever sold, probably), and shot some photos.  Finally, there was a little clarity in the photos it took.  I have a slew of older Pentax nifty fifties and a 35 mm Pentax as well as a newer Sigma zoom.  I was getting nothing.   So what’s wrong with this picture (pun intended)?  Clicking it will take the viewer to the smugmug page repo where I keep the larger size photos.