Hope those tips didn't get rid of the K3003's awful incoherency issues (and made them perfectly, er, coherent!), otherwise you won't be hearing the AKGs in all their musical turd glory.
Thankfully, I do believe I've found some tips that work out for me in regards to the K3K, but I do not believe any such luck can be had for me with the PF unless they change the shape/size of the housing substantially (my left ear is quite different from my right), which would most definitely alter its unique acoustics
Shame, you were quite unlucky there with the PFs. I do think, though, more people would find the 1601s (much) more awkward fitting (I certainly do).