Put about 200 jumps on Sabre 150, bought brand new. Always opened very hard, with one(!)single exception, when it opened very sweet. Once almost killed me and my neck hurt for weeks (packed by a pro). Rolling the tail, stuffing the outer cells into the center cell, puling the slider in front of the nose, pushing the nose into the pack job seemed to help nothing. My stiletto opened OK,however it also smacked me once, so I almost blacked out. Tight rubber bands (the traditional type) definitely help). It was also difficult to pack, remaining slippery for all the time. It flew great though and I really liked flying it. mc