I don't know why you posted, "I have to say that I am disappointed with the customer service from Sailrite". They gave you a link that saved you from going through all their fabrics, then you chastise them for not know about something they do not carry. Yes, "Perhaps I(you) am being unfair" to Sailrite and Precision. Try calling a Ford dealer and ask them for some literature on Edsels.
I am flattered that you took the trouble to try to comprehend, so let me try to explain my disappointment to you...
I am disappointed because when I took the trouble to contact SailRite, asking if they had a fabric which was blue velour with tan and grey flecks in it. and even sent them this picture;
they couldn't be bothered to relate it to this;
or the video above - which was produced by SailRite. The simply provided me with a link to their fabrics in blue.
Your analogy doesn't fit. It is more like going into a Ford dealer and asking for information on a red convertible because you like the color red, and want a convertible, and the sales person replying; "go to our website and call me when you know what you want." I would expect to have the salesperson tell me about the current Mustang and maybe even mention the 2000-2005 Thunderbird.
Because I had reached out to them, I was what would be called a "hot prospect." I have gone from being a hot prospect to someone that is now slightly biased against them because they couldn't be bothered to help me with a simple request.