I did it one time after I had played 20 some odd seasons. IIRC, it was roughly half a run for 40 points in PC. At the time, I determined that the difference between 65 and 75 could be written off as SSS but a 25-30 point difference would be enough to consider when deciding between two C.
Sadly, I think customer support is more oblivious than nasty. They say "No, that's how it's supposed to work" without reading the ticket. MT33 would say "STFU. I've got stables to clean. Figure it out on your own!!!"