[TR] Shaking TR3

[terryrs at comcast.net]

>It is very smooth to about 45 mph and then it gets shaking and wobbly from 45 to about 60 or so and
>then smooths out again. 

Ensconced in the bliss of engineering ignorance, I'm wondering if the drive shaft might be out of balance, or a bad u-joint, that makes it seem like a front end wobble?

Terry Smith, '59 TR3A
New Hampshire  (BTW, If you actually have a TR3A sighting that is more than a blur of color, stock or not, they're driving too slow!)