This subject of KPIs recur time and again. Just recently I had given my reply in similar post. I request you to go through the following link:
Though the heading of the above post is about IT company, the reply is applicable to all the industries. In the link above, you will find further few more links. I recommend you going through all the links patiently. This will help you in clearing your misgivings if any, on the subject of PMS.
Developing competence on designing KPIs is a time taking process. It requires working under some expert. Else, you may do more damage than good.
Do you wish to hire my consulting services to establish comprehensive PMS? I have worked for world's second largest logistic company. I know the challenges of the logistic industry. Please check with your management and confirm. If you wish to know more about my consulting services then you may click here to check the presentation.