Hmm...well, I guess maybe I'll have to live with it. I may just put an extra G28 in my start gcode then, which would correct that issue. I will test it again tonight and run a print. My only outstanding issue was that even after re-calibrating my offset, my extruder was still about 12mm above the bed when it started printing. I thought perhaps this was related to this issue as well, but I guess not!