Sub-frame connectors

my doors open and shut fine if it is on the ground, If I jack the front up and put jack stands under the frame right behind the front tires, the doors still open fine but the driver will normally not shut at all. When I just had the tranny out recently, I also had the the back end up in the air (stands under the rear axle tubes) and the driver door worked fine but the passenger door opened and would not shut. I think when I weld mine in, I will go get a pair of old school car ramps and drive the front wheels up on them then put jack stands under the rear axle and make sure both doors open and shut properly.