i think i got around the 85-90 for that one.. got the same as you kepplaffin tech with the F major, C minor, B minor, E minor... but i didnt bother about the bell...
well...
you dont want to be too far away from the lens... probably about <1cm otherwise other levels of escalation in the height may cause it to distort or not look proper
just because they dont have a school certificate test doesnt mean there wont be any extra test supplicating the sc test.. suckers think they got out on this one. they be wrong