The steering on my '71 TR6 gets a bit light and dodgy over 62 mph. Tire pressure is 26 all around. Front end was supposedly rebuilt by prior owner about 24 years ago but car has only covered less than 6000 miles since by me. Wheel bearings seem fine - no play in wheels. Tires are almost new Michelins. Is this a problem or just normal for a TR6? Any ideas?