Mechanics’ time is not properly used or recorded

Excessive uncharged mechanics’ time

Parts used on a job but not charged

Parts overstocked then written off

Non-stock/direct-to-job parts ordered twice

Stock parts already in stock, ordered as non-stock parts

Delay in returning delivered parts and surcharges

Delayed or missed invoicing

Disputes about invoices

Failure to claim warranty as agreed with manufacturers

Poor access to maintenance records (or poor records)

Duplicating a job