Adjust
Definition 1 of 5
Pro Tip 1/2
Fine Tuning
Use 'adjust' when making small changes to improve functionality or correctness. She adjusted the recipe by adding more salt.
Pro Tip 2/2
Not Overhaul
'Adjust' implies minor changes, not completely overhauling or replacing something. I just need to adjust the time on the clock, not get a new one.