That's very encouraging, Mark. Mounts are a possibility I almost mentioned, but it is down on the list (fortunately). If your mounts have deteriorated to that point a couple of other things will be large red flags, and I don't think there's any way you wouldn't have noticed them.
One suggestion: if you have the chance to take this to a coin-op car wash you might do so and clean as much down there as possible. Decades of migrating brake fluid and grease mixed with road dust can make this area messy. Another comment: the arms travel in a natural arc and the pedal rods are also bent into that same arc, so there is a "happy spot" those must travel in and it isn't all that forgiving. Recently I noticed my brake light was staying on and it turned out to be a bit of the new pedal seal I installed had become caught between the rod and the hole. Added to that, the return spring wasn't quite strong enough to pull the brake pedal back as sharply as it should, so I added an extra spring down there. That tube (or steel rod, basically) that your brake and clutch arms pivot on is one tough piece of metal...incredibly tougher than the bushings, so it isn't likely to have worn out. Good luck!
