Hello, I am building a MOC and I ran into a part discrepancy issue. My model utilizes the hinge on the left (slot with no circle). When I placed an order for more of these on bricklink, I received exclusively the ones on the right. I assumed I ordered the wrong variant but I cannot find any documentation on this difference. The problem is my moc relys heavily on the fairly stiff resistance of the left (slot only) style. The one on the right is very loose by comparison and is not compatable with my design. I know these have to be different parts because the injection sites are on opposite studs. Can anyone identify the specific part numbers of each so I can get my hands on more of the slotted type for my build? Thanks
-Sam
