I have had a pentax k50 just returned after 4 months while awaiting a repair.I at first asked if they could help with the costs as the same problem occurred with the k30,aperture block.
They never got back to me at all.The call centre staff tried their best to get an answer from the main centre,but nothing came back.This problem is well known to Pentax,the cameras should have been recalled.
I have always been loyal to them and I am worried that they might stop the slr range,or support for some of the cameras.
Another thing is the lack of independent lenses.I have a Tamron 2.8 70-210,and have a 5 year guarantee.But they appear to be making fewer lenses for Pentax.When I did decide to pay the repair myself Jouhnsons had it done very quickly.