The product was shipped with defect.   Inform Wayfair.ca immediately.   Wayfair customer service rep  arranged replacement shipment immediately.  Its customer service team is excellent - polite and professional.  

Manufacturer shipped out the replacement fast.   The product is easy to assembly even for someone like me who seldom assembly furniture.   The kitchen cart looks great too.   

The only complaint is the casters.   They just do not attach to the cart.   Almost give up and return the item.   At the end, try to wrap the caster rod with photo album double side tape to see if it helps preventing the casters from coming out.   It does work.   I hope the company can re-design the caster.

Overall happy with the kitchen cart.