Not sure what's changed lately, but since my last post the eval samples are much easier, leaving me now at mid-80s accuracy, and hardly ever missing any of them (though still occasionally missing samples that I could still tell were an obvious oversight on my part, and thus understandable).
Has the difficulty of the eval samples now been scaled to match the accuracy rating, so that you only really start seeing truly difficult ones once you're up in the 90s?
Also, it seems to me that now I'm in a state where -- because I'm taking more time with each sample, but the accuracy rating is higher -- I earn less ISK, but advance in rank faster. Anybody else experiencing this? I kinda prefer it, since the ISK/hr isn't great anyway, and I'm really more in it for the SKINs/goodies anyway.
Also, handy tip: on my keyboard, the AltGr key opens a zoom window on the main graph, allowing you to zoom in on key parts of the curve without re-scaling the lower window. This zoom window has a fixed y-axis, which is much easier to read as a result.