Razor,

If you are running something like a 9x7 or 9x8 on that OS, it should go straight up without problems. Just release it at an angle of about 70 degrees... if it decides to roll over: no problem you're still going nearly straight up... plenty of time to correct.

If that doesn't work... than the Phenom is lead sled... [:-]

I really hope you get it airborne this weekend... I was looking forward to an (unbiased) flight report... the powerplant isn't what I was hoping for, but anyway, it should give an idea about this thing is capable of.

Video would be nice... keep the cam ready...

Good luck!

Edit: by the way... I feel for you man... If there's one thing I hate, it's tearing into a nearly finished airplane because of some silly oversight... I really hate it when that happens, and it happens....