I've had horrible luck with so-called CTS. 270K-350K actual for 300K spec, anywhere from 470K to 550K for 500K spec. Any online dealer screen them? I haven't had one single order get close and I tried almost every single online vendor. I'll accept 490/510 for 500K, or 290/310 for 300K. Any of you guys have a source? Thanks for any link/info!