Originally posted by pepperberry farm buy a good, used K-3 or K-3II and never look back... make the K-30 your fully-manual camera...
I was gonna suggest to do 1 and 2 - but pepperberry's comment is very persuasive!
I had the aperture block problem on my k-50. I shot strictly manual for about 1 year. I did so because I was not aware of a potential "fix" in filing the thing... Best thing that happened to me, as I really learned my camera and how to actually take a photograph...
Back to the aperture block though - I took it upon myself this past January (2018) to fix it (I had all the tools and was snowed in in early January without a thing to do). I did it, and it went well, honestly. To this day, the camera still performing as it did when brand new. However, I do have a great appreciation for shooting manual, and I still do; especially since my most "modern" lense (other than the kit) is an F series.
If you are going to do the aperture block filing thing - watch some videos. I do hear that the k-30, the final step is more cumbersome. Nevertheless, the final screw is "sealed" in place with some nail-polish-like product = TAKE THIS OFF COMPLETELY before attempting to unscrew it, or you'll mess it up, and game over.
Between a k-3 and the k-3ii, I'd go for the k-3 (me personally) - and I will likely get one soon, as my k-50 is leaving me wanting better high ISO (at least a decent 1600). The K-1? I cannot, on my personal situation (family, kids...), come to senses to spend that much on a hobby. Not yet