To follow up if you see the errors drift upwards to 0.4 vs .04 there could be other issues.
to think of it another way for every 1000 usd earned your error rate costs you .40 cents usd
if it drifts to 0.4 for every 1000 usd earned you would lose 4 usd.
Getting the replacement blade is more important.
If you could also please let us know how the RMA process goes for you. One other person said it was kinda painful.
I am hoping to see if they got bad luck, or what your experience is like on S5+ RMA.