Well, there is always the old standby..... 'No, your other left.'
But if there really is any confusion, the windshield cover marked 'L' goes on the same side of the bike as the clutch lever. And the arrow points forward.... which in this case is more downward than forward but if you put it on the other way, it actually points backwards.
If all of that is not enough, look in the manual to see how Kawasaki tends to assemble these things.
And as far as the heating / bending / altering the covers to work with a CalSci windshield: glad that worked for you but my stock windshield covers fit my CalSci windshield perfectly as far as I can tell and the use of the two components together for seven years has not resulted in any cracks or problems. I do not know what is or has happened in your mixing of the same parts (CalSci windshield and stock windshield bracket covers).
Brian
aaaah......yeah that clears it up. 