It is easy to get the wrong impression of almost any firearm by relying on internet forums for your information. As Jocko said, buyers are more likely to search for a forum and vent about negative experiences or look for solutions than they are to post their positive experiences. Kahr produces a lot of handguns, and the majority of buyers have never logged on here at Kahrtalk.
I'm the proud owner of 3 Kahrs now - a CW9, CW45 and a CW380. All three have been just fine from the very first outing with no special prep work.
Clean, Lube, Shoot, Repeat.
Chuck