Fun tangent: I hit a bug in Opal recently with the stored value cards. I was able to obtain a balance that read out higher on the exit turnstile than on a top-u

Fun tangent: I hit a bug in Opal recently with the stored value cards. I was able to obtain a balance that read out higher on the exit turnstile than on a top-up machine. I'm pretty sure this was related to a recharge that failed and then eventually succeeded. Multiple top-ups later and the difference seems to persist.