You might consider upgrading to Unitec's double headed card reader. The only issue I have had with this unit is that the body of the reader is not enclosed in a cover. The electronics are exposed. I found the reader would fail if a hard driving rain hits the face of the WS2, water droplets from the
coin acceptor, would drop right down on the reader. Unitec replaced it. But the issue of no cover to protect the electronics is still present. I did a home spun fix, taking a high quality zip
lock bag and sliding it over it and a rubber band to hold it on. Don't use a sandwich bag. They are thin. Use a thick heavy duty one. Year and half now and no problems. Customers love it. No fighting with the card. I will add that if your WS2 is an older model you may need to upgrade your machines OS software also. Which means replacing a chip.