I removed the door seal used as a mold for the left door frame. I was pleasantly surprised at how well this technique worked. After I removed the seal I cleaned up a bit of excess epoxy and sanded the frame opening. Afterwards, I used the same seal material to finish the process on the lower portion of the left door opening. I received from PlaneAround black delrin blocks in exchange for my earlier white blocks. I trimmed to fit the door blocks for the left door. Following that task I began installing the door latch assembly to the left door.