dude unless you are chris turpin, leaning back and pressing off a lip is going to kill you on a cork 5er. id love to see footy otherwise. not talkin shit though im just curious.
to the thread starter, get a good carve off the lip to set you on the right axis, make sure you pop hard and commit, at 270 you should be facing the ground so find that landing and dont lose it. in my pics i have a picture of an underflippy 5 which is really just a 5 thats so corked you loop it, but you can see where you have to look and how to carve to get the rotation pattern. but all things aside, make SURE that you carve and POP because even though this doesnt seem like a very poppy axis, without the pop you are probably going to undershoot and die. damn im bored. hope that helps, im going to bed.