RE: Jemco Focke Wulf 190D-9
Boy. what a nice job. Really brings back memories, "Jemlock" system, which you described in the way the fuse goes together, and all. My Jemco Zero, built back in the late 70s, was among other things my first foam wing and first flap and retract-equipped airplane. They do buld up heavy, particularly in the fuse, so don't beat yourself up over the weight. I had to add a lot of weight to the nose of the Zero, but it flew well. I doubt that with the Dora's long nose you had to add too much.
Try Skyshark RC for their FW D9 spinner. I think the Skyshark FWs and the Jemco are close to the same size. Here's a pic of the 190D spinner on my KMP 190A. It's a little small for the KMP (72" span) but should look good on your Jemco.
Again, good job!
Al