Mike im an elevator mechanic in West Palm Beach, Florida. Our company has a division that replaces the hydrolic cylinders in the ground. This is a very dirty job when trying to remove a cylinder that is in the ground from 25 to 90 feed in the wet earth somtimes with hydro oil in the ground spraying up on the guys in the elevator shaft. If you contact me i can give you more details if your up to this real challange.