Hi Tony... just to let you know that I tore my ACL 2 years ago and rehab was, to be charitable, only marginally successful. I got back on my 2001 Gazelle about 2 months ago. I found a position on the Gazelle that basically brought me from having to walk stairs on pain & with aid to being back to be able to ski ,walk, run and climb stairs without pain or limp. Thank you. I've also gone from 240 lbs to 216lbs ! Thank you again! Tom Brancato