dumb question number 9999

Pulling one way or the other may NOT be adjustment, I'd be for checking things, like:

Check tire pressure and take a good look at the tire tread for any wear patterns.

Does it steer good? If really not, I'd be looking for something loose in suspension

At the LEAST pull the drums and inspect them, uneven wear, both of drums and shoes, oil or other foreign material or damage to shoes, etc and of course lining wear and thickness