I did about a month ago.... and the #s I told him I got were ok, but in his findings, he found the springs he's tested were much higher, even on a used set. Now, this was at DC, and the tool they used was a very sophisticated spring tester for valve bodies, or something... so he was questioning the accuracy of our spring tester (and for good reason) at work. Our's has a factory calibration kit, and it's checked quite often, and also found to be real close to what they see when they order springs from stock to wild. So.... who knows? I believe he told me (sorry 5D if my "mammory" is bad) that 90psi would be kinda too low, especially on a higher boost application for the same reasoning that I believe.
Sorry, but it is worth it... it is a rare thing to have happen, but Murphy's Law usually sux.....