INVERTERcentral.com | PO Box 220 | Perry, ME | 04667 | United States of America
If it ainít broke, donít fix it.
Meaning: If something is working fine, donít change it unnecessarily.
Example: X: Why do you want to change this component in the machine when everything is working fine? Y: OK. I agree. If it ainít broke, donít fix it.