I attached the hinge to the cargo door with solid rivets. Then I clamped the hinge to the door frame to determine where I would have to rivet the door to the frame. The cleco clamps would not allow the door to fully close so the only way to be sure of the alignment was to actually set a rivet at one end of the hinge. This not only secured the door to the frame, it would allow me to fine tune the overall alignment to the frame. The only problem was initially setting the height of the hinge to the frame.
After a lot of fitting and clamping I thought I had the door just right. So, I drilled it and decided to set a rivet. Once the rivet was in place, I removed all the clamps and closed the door to check if I had set the door correctly to the frame? I did.
The next step was to adjust the rotation of the door in relationship to the frame. That rivet acted as a pivot allowing me to adjust the side opposite the hinge up and down to get the perfect alignment. Once I achieved that alignment, I clamped the hinge at the bottom and drilled the very bottom hole. Then I set that rivet and removed the clamp.
Now, the door was attached to the frame and was free to move throughout its range of motion. I verified that the overall alignment was perfect. With the door attached, I was able to drill all the other holes. Also, I will be able to figure out the latching method and get it installed. I'll need to add stiffeners to the back of the door, probably in the form of a bracket to attach a first aid kit. Might as well pull double duty since I have to add them anyway.
Once completed and I move into the covering process, I'll drill out those two rivets and remove the door from the fuselage. After cover/paint, I'll reinstall the door and all the rivets during final assembly.