Lay the frame down, with all of the crossmembers and drawer members in place except the upper crossmember and drawer member which are facing up.

Place the assembled cylinder lying down so that the press feet are between the spacers. You need to insure that the vertical height is correct, and that the cylinder is centered.

Insure the magnet holder nut (welded to the press feet) is on the same side as the sensor holder hole (hole in one vertical).

The top of the upper press foot should be (4 3/4" for normal)(6 3/4" for monster) away from the bottom of the upper crossmembers.