I had the same problem Bruce had but my faucet handle did not have an access cap. I spent several days trying to find some reference on how to remove the handle. Today, I called the factory and spoke to Kermit and within 5 minutes I had my answer. PC uses two styles of handles those with and those without an access cap.
When there is no access cap the handle assemble is made up of 2 pieces, a base and a handle. The round handle ( parallel to counter top) is screwed into the faucet and holds the base in place.
Here are the steps I used to lubricate the squeaking stem in the hot water bathroom faucet:
1. Unscrew handle and remove
2. Remove base
3. Remove screw from top of stem assemble
4. Remove handle attachment point
5. Remove large nut
6. Remove stem assemble from valve
7. Pull stem assemble apart to gain access to stem
8. Lubricate stem
9. Push stem assemble together
10. Reassemble faucet
