Looking at the fiche for your model i can't see a way of moving the lamp-aim except modifying the mounting-frame
The adjusters should give plenty of movement, did you try going both ways?
I'd fetch the lamps out again and check it's all working as it should.
Never adjusted far enough myself (MkII only) to see if there's a limit though i'd expect to notice one.
Bringing the forks up through the yokes would be ok if really necessary, steering will quicken up slightly unless you match it with losing a bit of height at the back too.
If you can stand losing the bit of clearance then no harm.
Someone with a MkIII will be more help