If it's an early 67 with a 19.9 ratio box, you can tighten your steering box and maybe that will help. The later 67's had a 16.1 ratio box, and may be different in how they are adjusted. Turn your steering wheel all the way to the left, then pop the hood. Locate the steering box and you will see a nut on top of it with a slotted bolt through the nut. Loosen the nut and turn that slotted bolt in until you feel it rub on the steering linkage. Don't get it too tight. Just barely rubbing. Then tighten down the nut and you are good to go. If that doesn't do the job, then you will need to order a new one from places like Flaming River. Now, this is assuming all the other steering components are good to go.