(friendly note for future posts: as a parliamentary matter, it's considered poor form on this site to list your academic credentials [golf handicap is probably okay])
I went through this last year and didn't get the pleasure of the VSAS or whatever. However, I'm sure it's still pretty true that a part of scheduling aways is a personal-contact kind of thing. Besides, it gives you a chance to speak with whomever runs the Ortho offices at those programs... and guess what?... these almost-always-VERY-friendly folks FREQUENTLY have some input in who gets offered interviews and who doesn't (probably more of the latter: if you happen to tick-off a coordinator or secretary with irritating emails, arrogant call, or snide remark, you can pretty much guarantee that you won't get interviewed... no matter how smart/qualified you are).
So, as was briefly stated earlier, it'd probably be best for you to make contact with those programs where you'd like to rotate, either by phone or email. They're not going to fault you for asking reasonable questions, and that might be your best source if there are any additional required submissions.
In the meantime, don't forget to do well in your M3 rotations...