When an edge is really dialed in tight, angle and pressure errors are unforgiving. Having two razors at different levels of sharpness might be keeping you from getting into the right groove. When all of your razors are in the same category of blade prep, you adjust your technique around that. At least that's one potential theory. I have experienced what you described a while back. Now I have honed all of my razors to the same level and they are all finished on the same finisher. Not only are my shaves that much more predictable, but better. At this point, too sharp is not a problem.