My left inboard gear door will partially close before the main gear can close.  The results are obvious.  Other than that its a great milestone in the building process. Thanks in advance.

 

Assuming all things are equal, the only ways that the door could start to close if hoses are incorrectly connected or something is allowing the door valve (activated by the physical up position of the main gear) to pass hydraulic fluid to the door actuator (stuck partially closed, lube it and exercise it with your thumb).  Could be a dirt particle holding the valve open. 

 

Perhaps this could happen with air in the system.  Run the hydraulic pump with the dump valve open and the gear down for a minute.  Then, manually lift the gear and close the doors and run the pump again with the dump valve open.  This procedure should remove a great deal of air from the system.  Maybe you should do this twice.