I have been buying fuel from them for years and never had that problem.
I did, too, and it was very convenient, until they basically wouldn't sell castor oil to me, and gave me some sort of BS lecture about their proprietary super oil over the phone. And that "all castor oil is bad". Theirs *was* bad, but no one else's was. Then they referred to Tom Dixon as a "top CL stunt engine expert" at which point I gave up.
I don't know what it is about fuel people, they almost always have some nonsensical proprietary super-something but won't tell you what it is, like there's a big market for methanol-compatible 2-stroke mix oil and you are out to steal their pot of gold. I know people love magic but really, come on.
I have no issue with anyone buying stuff from FHS/Red Max if you can get what you want, but I sure as heck won't buy anything from them and certainly won't recommend them to anyone else.
Brett