List the changes
Say whether the sink, tap, trap, worktop or cabinet was replaced and what symptom followed. Include whether the appliance was removed and refitted if known.
Keep the issue specific
A leak, slow sink and failure to start require different investigations. A whole-installation photograph helps an engineer plan checks instead of assuming that the disposer itself needs replacing.
A useful distinction
A new trap or connection can change the waste route without altering the disposer itself. Include the original and present symptom if known, allowing assessment to distinguish a fitting enquiry from a new appliance fault.