Can I set default timecode size/position for exports?

Is there a way to set (somewhere in a prefs file I'd guess) the default timecode size/position of burnt-in timecode for exports? I always find the default settings too big and obtrusive, so every time I export soemthing with timecode, I set it to a smaller size and move it down a bit. Is there a line in a prefs file somewhere that I could edit to make this permanent? I konw I could save an "export setting" with these in them, but I usually set me own settings on each export, so I'd have to set up a whole load of export settings.