Clutch pedal does not return

The spring for the clutch fork is still the factory 1972, the clutch is just a standard clutch no perfomance clutch. I did not completly set up the adjustment on the clutch left a little play as i read in another thread. Explain the diaphragm clutch (already got the answer from google) yes it is a diaphragm style clutch. so ya all are telling me to remove the heavy spring that is undr the dash on the pedal and see if this will do the trick???