Putting PSA to the test?

[mferronibc]

I am just wondering if anyone has ever reported submitting known trimmed cards to PSA to evaluate their ability to detect alterations and put their rubric of measuring, etc (if it even exists) to the test. Would be very interesting to submit say 10 cards for grading, 3 of which had been trimmed (obviously by someone who knows what they’re doing) and see if the doctored cards are identified. Conspiracies and back door payments aside, if they did pass the test so to speak wouldn’t that give a lot of us reassurance that many of our graded cards are legit rather than wondering if our whole collection is a fraud? Anyone up for trying?