Just for diagnostics, spray all the front end components with Silicone or WD40. Make sure the joints are all greased. On a flat paved surface, measure from the ground to the top of the wheel opening. Bounce the front end and remeasure. You may need to adjust the torsion bars. Uneven front can throw off the rear as well. If the front is now good measure the rear side to side. You probably have the original springs (near 60 years old now). It might be time to replace them with new. I recommend Espo Springs.