There are many factors to work with when you're trying to improve tracking and handling in the PV-series.

First, take some time to ensure that there is no play or looseness in the steering gear or the linkages. You can adjust the steering gear box quite a lot before you actually have to make any internal repairs.

If you're satisfied that those components are as good as they can be, look to your bushings. Use urethane bushings. You can machine them if you need to adjust the fit, and they are much tougher and beefier than the stock rubber ones. Cost is negligible.

Check your king pins...those internal pins that are inside the steering knuckle that attaches the front spindles to the A-arms. You can still get king pin kits for these cars, and they aren't very hard to install. Worn king pins would give you a feeling like worn ball joints in other cars - instability.

Next, check out those front and rear shocks. All the shocks need to be in top condition, otherwise the car tends to wander. Sound familiar? I'd install gas-filled shocks if you can get them. They work much better than the standard hydraulic shocks.

Last, once you have inspected, adjusted, and replaced everything and you know that you have done all you can, get the car aligned at a good shop. They should check that both the rear end and front end setups are dialed in.

If it handles badly after all that, shoot it!

Good luck!

Steve
'64 PV544