The above is correct about the calipers.

My reference to the booster sticking is the pushrod, not the pedal side..I never got into the booster to figure out why they didn't retract fully, just replaced them.

To help narrow it down, go for a ride and when things act up, Crack the lines loose at the master. If there's a squirter then you're looking at master, booster, pedal. If not then move downstream.