I don't have pics, but it's maybe a centimeter. A pic would be hard to see.Do you have any pics to show how close?It is very close, and if you don't have the pin seated all the way in, it will push up on the nose of the Busa (baaaad).Number 6 pin is the one that Pit Bull says the Busa uses. I'm curious... how tight a fit is it? From pictures is looks like it touches the nose.It is a very tight fit though, and it uses the #6 adapter (I'm pretty sure on that, but double-check).
I had problems getting it in (NO JOKES PLEASE), until I put a little lube on the pin (OK, YOU CAN JOKE NOW). I used a little WD-40.
It does take a little bit of fiddling, getting the pin at the right angle, but once you do it a couple of times, it's no big deal. If you really wanted to be careful, put an old cloth on the front fender.
When I first got it, it didn't "lock", so I was wondering how the hell it would lift the bike. I think it needs to be loaded in order for it to lift the bike. It's a well built stand. I'll purchase a Pit-Bull rear stand shortly because I'm so impressed with the quality.
Good luck.
It's easy to put a towel down on the front fender to prevent scratches.