Don't get me wrong, I *love* revolvers. The K9 was the last in a long string of semiautos. I felt like Goldilocks (this one's too big, this one's too small, this one is too finicky, etc). It was the proverbial straw that broke the camel's back. I haven't regretted the 37-2 that replaced it ever.
My K9 problem wasn't related to cleanliness. I keep my guns pretty clean and would clean my semiautos after every range trip. The gun just didn't want to work. Why it was reliable before and after I bought it, only to be come a paperweight later on, I'll never know.
Chris