http://forum.xitek.com/showthread.php?threadid=482965
(in Chinese, Google Translation to English Here)
Wow! Really What a Hacking! Brilliant! :-D Not even the P and S exposure modes are now working flawlessly, and so does the P-TTL flash mode and exposure! Great Job!~
In short, that Pentaxian hacker drilled new holes for the "A" mount and re-built all the A mount contacts (and switches) for the lens aperture information (which tells the maximum and minimum apertures) and succeeded!
Btw, the hacker needed to drill new holes on the K-mount accurately and some machinery and tools are required, e.g.:-
(Source: http://forum.xitek.com/showthread.php?threadid=550416)
If you are a Pentax DSLR user and have an old Rikenon P lens, why not give it a try?! ;-D
(Source: http://www.flickr.com/photos/d2gallery/4505273406/)
Read Also:-
Disassemble the Pentax-F 70-210 Zoom Lens
Disassemble the Old Takumar-F 28-80 Zoom Lens
Disassemble (and Repair) a DA* 50-135!
Repair a Stuck SDM Yourself!
Disassemble a DAL 18-55