I have recently posted this same message on robgalbraith and outbackphoto's forums.
Some time ago I read a thread discussing the inability to focus on infinity and shift using the Pentax 35 FA (with the Zork PSA). After reading this I discovered that my set up was having this problem and that slight damage to the rear barrell had occured. I contacted the fellow I purchased the PSA from, the Zork distributor, and wrote that I expect Zork will take responsibility for the cost of the repair. His last response was that it's unfair that Zork take full financial responsibility. He wrote: "We work with the samples we're provided, as well as with the technical specifications provided by the lens manufacturer. The kind of issue that you have is not dissimilar from what has happened with some SLR owners and third party electronic flash units that happen to damage the circuitry of the camera. In such cases, both the flash manufacturer and camera manufacturer work with KNOWN specs, but then you have the exceptions - out of tolerance units."
I'm shaking my head in disbelief here. Am I crazy or is this not an open and shut case? He recomended the lens to me, I use their device without any forewarning of possible risks, the PSA causes the damage and I should help pay for part of the repair?
The distributor is a fair man; he has been nothing but helpful. His resolve is causing me to question what seems obvious. Would anyone care to shed some light? Thanks,