Recently a plumber came and stopped my bath-tub faucet from leaking.
So far so good. The next time I took a shower I noticed that it was
easier to turn the cold water knob than the hot water knob. The hot
water tap required more force to turn than the cold water tap. My
question is: Can a layperson with no plumbing experience like me even
out the taps with just a screwdriver and 15 minutes? How does one
repair this?

---Thanx
---TConrad