Rick, I will be glad to work with you. But let me tell you this. When a strut gets a few years old like 5 or so, the pressure gets less. NOS stock isn't any good. The door struts are 1200 Newtons + or - out of the box, if I'm not mistaken and will as you know increase pressure and decreases as the temperature changes. Most are date coded as I get them and well within specs. I also recently tested a 5 year old against a new one and just guessing I would say there was 20 to 30% difference. John Hervey ?http://www.specialtauto.com/hardware.shtml << I recently had trouble with a mechanically incompatible door strut that I purchased from a well known, and otherwise respected vendor. I've since ordered replacement struts from a different vendor, and will be comparing them in terms of geometry and function. >>