#1. Hose down lock with WD-40 (which does NOT have lubricating qualities)
#2. Run a key or pick in and out of the lock, wiping off between cycles.
#3. Do this for 10 or 15 min or until tool/key comes out clean.
#2. Let dry for a couple hours.
#3. Get a good silicon or teflon based spray lube and hose down the insides of the lock again, turn the lock so the pins are at the bottom to allow lubricant to soak through.
#4. Pick the lock.
If squeaking, roughness still occurs, disassemble lock and replace all springs.
