Tex, I have TrueFlight LW Parabolic 4" pink solid and barred.
Feathers are a HUGE investment for a business. Different lengths, shapes and MANY colors to stock and they aren't cheap. Yes, the pinks are made in all sizes and shapes, but the demand has been very low so many retailers don't carry them. Some of the bigger suppliers like Lancaster should have them. As a last resort, you can buy them directly from TF, but they will be the most expensive feathers you will ever buy.
Another option would be to chop or burn. Pinks are readily available in full length.
I've been working on KK to carry more pink. If enuf of us will keep bugging KK and 3R for pink, they will get the hint and start carrying them.